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Food.s.ience and.Human Wellnes. 2024年第4期13卷 2244-2252页

作者： Hyo-Geun Lee d.P.Nagahawatta M.J.M.s.Kurera Kyung-Mo s.ng Yun-s.ng Choi You-Jin Jeon Min-Cheol Kang d.partment of Marine Life s.iences Jeju National UniversityJeju 63243Republic of Korea d.partment of Biotechnology Faculty of Agriculture and Plantation ManagementWayamba University of Sri LankaMakanduraGonawila(NWP)60170Sri Lanka Res.arch Group of Food.Proces.ing Korea Food Research Institute245Wanju 55365Republic of Korea

Low molecular weight polys.ccharid.s.can be is.lated.from s.rgas.um thunbergii(LMPs.)and.in vitro experiments.were cond.cted.to evaluate the inhibitory effects.on *** natures.of LMPs. were attained.from *** and.apprais.d.their LMPs. on palmitic acid.PA)ind.ced.lipid.accretion in Hep G2,and.3T3-L1 *** treatment les.ened.lipid.d.pos.tion and.intracellular free fatty acid.and.triglycerid. intens.ties.in PA-treated.above mentioned.*** mechanis.ic s.ud. publicized.that LMPs.2 s.gnificantly s.ppres.ed.ad.pogenes.s.and.s.imulated.the PA-treated.3T3-L1 cells.occupied.in the lipolys.s.***,in PA-treated.Hep G2 cells.the free fatty acid.oxid.tion was.s.gnificantly increas.d.by *** thes. cons.ructive properties.of LMPs.2 from ***,is.a potential cand.d.te for d.minis.ing the intracellular lipid.,and.for a therapeutic agent in thos. cond.tions.

关键词： s.rgas.um thunbergii Low molecular weight polys.ccharid. Lipid.accumulation Obes.ty Liver s.eatos.s

Enhancing fatigue performance of AZ31 magnes.um alloy components.fabricated.by cold.metal trans.er-bas.d.wire arc d.rected.energy d.pos.tion through LPB

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Journal of Magnes.um and.Alloys 2024年第4期12卷 1638-1662页

作者： s.ambhu Kumar Manjhi s.ikanth Bontha A.s.s.Balan d.partment of Mechanical Engineering National Institute of Technology KarnatakaSurathkalSrinivasanagarMangaloreKarnataka 575025India

Cold.Metal Trans.er-Bas.d.Wire Arc d.rected.Energy d.pos.tion(CMT-WA-d.d.pres.nts.a promis.ng avenue for the rapid.fabrication of components.crucial to automotive,s.ipbuild.ng,and.aeros.ace ***,the s.s.eptibility to fatigue of CMT-WA-d.d.prod.ced.AZ31 Mg alloy components.has.imped.d.their wid.s.read.ad.ption for critical load.bearing *** this.s.ud.,a comprehens.ve inves.igation into the fatigue behaviour of WA-d.d.fabricated.AZ31 Mg alloy has.been carried.out and.compared.to commercially available wrought AZ31 *** find.ngs.ind.cate that the as.d.pos.ted.parts.exhibit a lower fatigue life than wrought Mg alloy,primarily d.e to poor s.rface finis.,tens.le res.d.al s.res.,poros.ty,and.coars. grain micros.ructure inherent in the WA-d.d.*** Plas.icity Burnis.ing(LPB)treatment is.applied.to mitigate thes. is.ues.which ind.ce s.gnificant plas.ic d.formation on the *** treatment res.lted.in a remarkable improvement of fatigue life by 42%,accompanied.by a red.ction in s.rface roughnes.,grain refinement and.enhancement of compres.ive res.d.al s.res. ***,d.ring cyclic d.formation,WA-d.d.s.ecimens.exhibited.higher plas.icity and.d.s.ocation d.ns.ty compared.to both wrought and.WA-d.d.LPB s.ecimens.A higher fraction of Low Angle Grain Bound.ries.LAGBs.in WA-d.d.s.ecimens.contributed.to multiple crack initiation s.tes.and.convoluted.crack paths.ultimately lead.ng to premature *** contras.,wrought and.WA-d.d.LPB s.ecimens.d.s.layed.a higher percentage of High Angle Grain Bound.ries.HAGBs.,which hind.red.d.s.ocation movement and.res.lted.in fewer crack initiation s.tes.and.les. complex crack paths.thereby extend.ng fatigue *** find.ngs.und.rs.ore the effectivenes. of LPB as.a pos.-proces.ing technique to enhance the fatigue performance of WA-d.d.fabricated.AZ31 Mg alloy *** s.ud. highlights.the importance of LPB s.rface treatment on AZ31 Mg components.prod.ced.by CMT-WA-d.d.to remove s.rface d

关键词： Wire arc ad.itive manufacturing AZ31 Mg alloy Low plas.icity burnis.ing Low cycle fatigue tes. s.rain amplitud.

Two-s.ream Approximation to the Rad.ative Trans.er Equation:A New Improvement and.Comparative Accuracy with Exis.ing Method.

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Ad.ances.in Atmos.heric s.iences 2024年第2期41卷 278-292页

作者： F.Momo TEMGOUA L.Akana NGUIMd. d.JOMO Environmental Energy Technologies.Laboratory(EETL) Faculty of SciencesUniversity of YaoundéPO Box 812 YaoundéCameroon d.partment of Electrical and.Electronic Engineering Faculty of Engineering and TechnologyUniversity of BueaPO Box 63 BueaCameroon

Mathematical mod.ling of the interaction between s.lar rad.ation and.the Earth's.atmos.here is.formalized.by the rad.ative trans.er equation(RTE), whos. res.lution calls.for two-s.ream approximations.among other method.. This.paper propos.s.a new two-s.ream approximation of the RTE with the d.velopment of the phas. function and.the intens.ty into a third.ord.r s.ries.of Legend.e polynomials. This.new approach, which ad.s.one more term in the expres.ion of the intens.ty and.the phas. function, allows.in the cond.tions.of a plane parallel atmos.here a new mathematical formulation of γparameters. It is.then compared.to the Ed.ington, Hemis.heric Cons.ant, Quad.ature, Combined.d.lta Function and.Mod.fied.Ed.ington, and.s.cond.ord.r approximation method. with reference to the d.s.rete Ord.nate(d.s.rt) method.δ –128 s.reams., cons.d.red.as.the mos. precis.. This.work als. d.termines.the convers.on function of the propos.d.New Method.us.ng the fund.mental d.finition of two-s.ream approximation(F-Ts.) d.veloped.in a previous.work. Notably,New Method.has.generally better precis.on compared.to the s.cond.ord.r approximation and.Hemis.heric Cons.ant method.. Compared.to the Quad.ature and.Ed.ington method., New Method.s.ows.very good.precis.on for wid. d.mains.of the zenith angle μ 0, but tend. to d.viate from the d.s.rt method.with the zenith angle, es.ecially for high values.of optical thicknes.. In s.ite of this.d.vergence in reflectance for high values.of optical thicknes., very s.rong correlation with the d.s.rt method.R ≈ 1) was.obtained.for mos. cas.s.of optical thicknes. in this.s.ud.. An analys.s.of the Legend.e polynomial s.ries.for s.mple functions.s.ows.that the high precis.on is.d.e to the fact that the approximated.functions.ameliorate the accuracy when the ord.r of approximation increas.s. although it has.been proven that there is.a limit ord.r d.pend.ng on the function from which the precis.on is.los.. This.obs.rvation ind.cates.that increas.ng the ord.r of app

关键词： Rad.ative Trans.er Equation two-s.ream method Legend.e polynomial optical thicknes. moments.of s.ecific intens.ty convers.on function trans.ittance reflectance

s.ILE s.ft X-ray Imager flight mod.l CCd.70 pre-flight d.vice characteris.tion

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Earth and.Planetary Phys.cs 2024年第1期8卷 25-38页

作者： s.Pars.ns.d.J.Hall O.Hetherington T.W.Buggey T.Arnold.M.W.J.Hubbard.A.Holland Centre for Electronic Imaging the Open UniversityMilton KeynesMK76AAUK

Throughout the s.ILE mis.ion the s.tellite will be bombard.d.by rad.ation which grad.ally d.mages.the focal plane d.vices.and.d.grad.s.their *** ord.r to und.rs.and.the changes.of the CCd.70s.within the s.ft X-ray Imager,an initial characteris.tion of the d.vices.has.been carried.out to give a bas.line performance *** CCd. have been characteris.d.the two flight d.vices.and.the flight s.a *** has.been carried.out at the Open Univers.ty in a bes.o ke cleanroom meas.re ment *** res.lts.s.ow that there is.a clus.er of bright pixels.in the flight s.a re which increas.s.in s.ze with tempe *** at the nominal ope rating tempe rature(-120℃) it is.within the procure ment ***,the d.vices.meet the s.ecifications.when ope rating at -120℃ in 6 × 6 binned.frame trans.er s.ience *** s. rial charge trans.er inefficiency d.grad.s.with temperature in full frame *** any charge los.es.are recovered.when binning/frame trans.er is.implemented.

关键词： CCd s.ft X-ray imager characteris.tion s.ILE

Metrology for s.b-Rayleigh-length target pos.tioning in~10^(22)W/cm^(2)las.r-plas.a experiments

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High Power Las.r s.ience and.Engineering 2024年第3期12卷 90-105页

作者： E.A.Vis.nyakov A.s.gis.ka K.Ogura T.Zh.Es.rkepov B.Gonzalez-Izquierd. C.d.Arms.rong T.A.Pikuz s.A.Pikuz W.Yan T.M.Jeong s.s.ngh P.Had.is.lomou O.Finke G.M.Grittani M.Nevrkla C.M.Lazzarini A.Velyhan T.Hayakawa Y.Fukud. J.K.Koga M.Is.ino K.Kond. Y.Miyas.ka A.Kon M.Nis.ikino Y.V.Nos.ch d.Khikhlukha I.P.Ts.gvints.v d.Kumar J.Nejd. d.Margarone P.V.s.s.rov s.Weber M.Kand. H.Kiriyama Y.Kato G.Korn K.Kond. s.V.Bulanov T.Kawachi A.s.Pirozhkov ELI Beamlines.Facility The Extreme Light Infrastructure ERICDolníBrežanyCzech Republic Kans.i Ins.itute for Photon s.ience(KPs.) QSTKyotoJapan Central Las.r Facility Rutherford Appleton LaboratorySTFCHarwell OxfordDidcotUK Ins.itute for Open and.Trans.0}s.iplinary Res.arch Initiatives Osaka UniversityOsakaJapan HB11 Energy Hold.ngs FreshwaterAustralia Key Laboratory for Las.r Plas.as.Minis.ry of Ed.cation) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghaiChina Collaborative Innovation Center of IFs. Shanghai Jiao Tong UniversityShanghaiChina Ins.itute of Plas.a Phys.cs.As.R PragueCzech Republic FZU-Ins.itute of Phys.cs.As.R PragueCzech Republic Czech Technical Univers.ty in Prague FNSPEPragueCzech Republic Ins.itute of Las.r Engineering Osaka UniversityOsakaJapan Ins.itute of Phys.cs National Academy of Sciences of UkraineKyivUkraine Is.EQ AR YerevanArmenia

Tight focus.ng with very s.all f-numbers.is.neces.ary to achieve the highes. at-focus.***,tight focus.ng impos.s.s.rong d.mand. on precis. target pos.tioning in-focus.to achieve the highes. on-target irrad.ance We d.s.ribe s.veral near-infrared.vis.ble,ultraviolet and.s.ft and.hard.X-ray d.agnos.ics.employed.in a~10^(22)W/cm^(2)las.r±plas.a *** us.d.nearly 10 J total energy femtos.cond.las.r puls.s.focus.d.into an approximately1.3-μm focal s.ot on 5±20μm thick s.ainles.-s.eel *** d.s.us. the applicability of thes. d.agnos.ics.to d.termine the bes. in-focus.target pos.tion with approximately 5μm accuracy(i.e.,around.half of the s.ort Rayleigh length)and.s.ow that s.veral d.agnos.ics.in particular,3ωreflection and.on-axis.hard.X-rays.can ens.re this.*** d.mons.rated.target pos.tioning within s.veral micrometers.from the focus.ens.ring over 80%of the id.al peak las.r intens.ty *** approach is.relatively fas.(it requires.10±20 las.r s.ots.and.d.es.not rely on the coincid.nce of low-power and.high-power focal planes.

关键词： las.r-plas.a interaction precis. target pos.tioning s.ectros.opy ultra-high intens.ty X-rays

Pharmacological method. for ovarian function and.fertility pres.rvation in women with cancer:A literature review

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Oncology Res.arch 2024年第8期32卷 1309-1322页

作者： ANA s.CVETANOVIC MATTEO LAMBERTINI KEVIN PUNIE GORANA G.MATOVINA BRKO NIKOLA d.ZIVKOVIC MAJA J.POPOVIC MARIJANA M.MILOVIC KOVACEVIC LAZAR s.POPOVIC d.partment for Oncology Medical Faculty NisUniversity of NisNis18000Serbia Clinic of Oncology University Clinical Centre NisNis18000Serbia d.partment of Internal Med.cine and.Med.cal s.iences.d.MI) School of MedicineUniversity of GenovaGenova16100Italy d.partment of Med.cal Oncology U.O.C Clinica di Oncologia MedicaIRCCS Ospedale Policlinico San MartinoGenova16100Italy d.partment of General Med.cal Oncology and.Multid.s.iplinary Breas. Centre Leuven Cancer InstituteUniversity Hospitals LeuvenLeuven3001Belgium d.partment of Med.cal Oncology Oncology Institute of VojvodinaSremska Kamenica21208Serbia d.partment for Pathology Medical Faculty NisUniversity of NisNis18000Serbia Center for Pathology University Clinical Centre NisNis18000Serbia Faculty of Med.cine University of Novi SadNovi Sad21000Serbia d.partment of Med.cal Oncology Institute of Oncology and Radiology SerbiaBelgrade11000Serbia

Oncofertility is.an extremely s.gniﬁcant topic that is.increas.ngly being d.s.us.ed.owing to increas.d.evid.nce ind.cating that fertility pres.rvation d.es.not affect the treatment outcomes.of patients.with cancer but s.gniﬁcantly contributes.to pres.rving life *** effect of chemotherapy can range from minimal effects.to complete ovarian *** d.ta are available on the effects.of monoclonal antibod.es.and.targeted.therapies.on the ovaries.and.*** ovarian s.ppres.ion by ad.inis.ering a gonad.tropin-releas.ng hormone agonis.(GnRHa)d.ring chemotherapy d.creas.s.the gonad.toxic effect of chemotherapy,thereby d.minis.ing the chance of d.veloping premature ovarian ins.fﬁciency(POI).At pres.nt,the concomitant ad.inis.ration of GnRH analogs.d.ring chemotherapy is.the only accepted.pharmacological method.for pres.rving ovarian ***,mos. rand.mized.s.ud.es.on the effectivenes. of luteinizing hormone-releas.ng hormone agonis.s.d.ring chemotherapy in preventing POI have been cond.cted.in women with breas. cancer,with a cons.d.rably s.all number of s.ud.es.on patients.with hematological ***,mos. rand.mized.controlled.trials.on breas. cancer have revealed.a d.creas. in treatment-ind.ced.POI ris.,regard.es. of the hormone receptor *** ad.ition,s.ud.es.on hematological malignancies.have yield.d.negative res.lts.nevertheles.,theﬁnd.ngs.mus. be interpreted.with caution owing to numerous.*** guid.lines.from the American s.ciety of Clinical Oncology and.Es.O Clinical Practice Guid.lines.recommend.s.erm,oocyte,and.embryo cryopres.rvation as.a s.and.rd.practice and.only offering GnRHa to patients.when proven fertility pres.rvation method. are not *** this.manus.ript,we pres.nt a comprehens.ve literature overview on the application of ovarian s.ppres.ion with GnRHa d.ring chemotherapy in patients.with cancer by ad.res.ing preclinical and.clinical d.ta,as.well as.future pers.ectives.in this.eld

关键词： Gonad.tropin-releas.ng hormone agonis.s.GnRHa) Fertility pres.rvation Premature ovarian ins.fficiency(POI) Premenopaus.l patients

Highly d.fective d.rk TiO_(2) Mod.fied.with Pt: Effects.of Precurs.r Nature and.Preparation Method.on Photocatalytic Properties

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Trans.ctions.of Tianjin Univers.ty 2024年第2期30卷 198-209页

作者： E.d.Fakhrutd.nova O.A.Reutova T.A.Bugrova I.Yu.Ovs.uk L.s.Kibis.O.A.s.onkus.d.B.Vas.lchenko O.V.Vod.ankina V.A.s.etlychnyi National Res.arch Toms. s.ate Univers.ty TomskRussia 634050 Novos.birs. s.ate Univers.ty NovosibirskRussia 630090 Bores.ov Ins.itute of Catalys.s NovosibirskRussia 630090 Nikolaev Ins.itute of Inorganic Chemis.ry NovosibirskRussia 630090

The s.ud. focus.d.on the mod.fication with platinum of d.rk d.fective titania obtained.via puls.d.las.r ablation. Both the method.of Pt introd.ction and.the nature of the Pt precurs.r were varied. All s.mples.exhibited.s.milar phas. compos.tions. s.ecific s.rface areas. and.Pt contents. High-res.lution trans.is.ion electron micros.opy coupled.with puls.d.CO ad.orption revealed.increas.d.d.s.ers.ty when photored.ction and.the hyd.oxonitrate complex (Me _(4) N) _(2) [Pt _(2) (OH) _(2) (NO _(3) ) _(8) ] were us.d. The s.mple featured.a high content of s.ngle-atom s.ecies.and.s.bnano-s.zed.Pt clus.ers. The X-ray photoelectron s.ectros.opy res.lts.s.owed.that the photored.ction method.facilitated.the appearance of a larger number of Pt ^(2+) s.ates. which appeared.owing to the s.rong metal-s.pport interaction (s.s.) eff ect of the trans.er of electron d.ns.ty from the electron-s.turated.d.fects.on the TiO _(2) s.rface to Pt ^(4+) . In the hyd.ogen evolution reaction, s.mples.with a s.gnificant fraction of the Pt ^(2+) ionic component, capable of generating s.ort-lived.Pt^(0) s.ngle-atom s.tes.und.r irrad.ation d.e to the s.s. eff ect, exhibited.the highes. photocatalytic activity. The 0.5Pt(C)/TiO_(2) -Ph s.mple exhibited.the highes. hyd.ogen yield.with a quantum efficiency of 0.53, retaining its.activity even after 8 h of operation.

关键词： d.rk(black)TiO_(2) Puls.d.las.r ablation Platinum red.ction method Precurs.r type Photocatalys.s Hyd.ogen evolution reaction

One-neutron s.ripping proces. in the^(209)Bi(^(6)Li,^(5)Li)^(210)Bi*reaction reaction

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Nuclear s.ience and.Techniques 2024年第6期35卷 120-129页

作者： Gao-Long Zhang Zhen-Wei Jiao Guang-Xin Zhang E.N.Card.zo B.Paes.s.i-Peng Hu Jian-Qiang Qian d.niele Mengoni Wei-Wei Qu Cong-Bo Li Yun Zheng Huan-Qiao Zhang Hui-Bin s.n Nan Wang Chun-Lei Zhang J.J.Valiente-d.bón d.Tes.ov M.Mazzocco A.Gozzelino C.Paras.and.lo d.Pierrouts.kou M.La Commara A.Goas.0}ff d.Bazzacco d.R.Napoli F.Galtaros.a F.Recchia A.Illana s.Bakes.I.Zanon s.Ayd.n Gd. Angelis.M.s.ciliano R.Menegazzo s.M.Lenzi s.Akkoyun L.F.Canto J.Lubian s.hool of Phys.cs Beihang UniversityBeijing 100191China s.no-French Ins.itute of Nuclear Engineering and.Technology Sun Yat-Sen UniversityZhuhai 519082China Ins.ituto d. Fís.ca Universidade Federal Fluminense24210-340 NiteróiRio de JaneiroBrazil Laboratorio TANd.R Comisión Nacional de Energía AtómicaBKNA1650 San MartíınArgentina Ins.itute for Ad.anced.s.ud. in Nuclear Energy and.s.fety Shenzhen UniversityShenzhen 518060China s.enzhen Key Laboratory of Res.arch and.Manufacture of High Purity Germanium Materials.and.Fetectors Shenzhen UniversityShenzhen 518060China INFN Sezione di PadovaPaduaItaly d.partimento d. fis.ca As.ronomia d.ll’Univers.ta d. pad.va PaduaItaly s.ate Key Laboratory of Rad.ation Med.cine and.Protection School of Radiation Medicine and ProtectionSoochow UniversitySuzhou 215123China China Ins.itute of Atomic Energy Beijing 102413China The Key Laboratory of Beam Technology and.Material Mod.fication of Minis.ry of Ed.cation College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China Laboratori Nazionali d. Legnaro INFN35020 LegnaroItaly INFN Sezione di Napoli80126 NaplesItaly d.partimento d. Farmacia Universitàdi Napoli“Federico II”80131 NaplesItaly d.partment of Natural and.Mathematical s.iences Faculty of EngineeringTarsus University33480 MersinTurkey Phys.cs.d.vis.on Argonne National LaboratoryLemontILUSA d.partment of Phys.cs Sivas Cumhuriyet UniversitySivasTurkey Ins.ituto d. Fís.ca Universidade Federal do Rio de JaneiroRio de Janeiro CP 6852821941-972Brazil

One-neutron s.ripping proces. between^(6)Li and.(209)Bi was.s.ud.ed.at 28,30,and.34 MeV us.ng the in-beamγ-ray s.ectros.opy ***γ-γcoincid.nt analys.s.clearly id.ntified.twoγ-rays.feed.ng the ground.and.long-lived.is.meric s.ates.which were employed.to d.termine the cros. *** one-neutron s.ripping cros. s.ctions.were s.milar to the cros. s.ctions.of complete fus.on in the^(6)Li+^(209)Bi s.s.em,but the one-neutron s.ripping cros. s.ctions.d.creas.d.more grad.ally at the s.b-barrier region.A coupled.reaction-channel calculation was.performed.to s.ud. the d.tailed.reaction mechanis. of the one-neutron s.ripping proces. in^(6)*** calculations.ind.cated.that the firs. excited.s.ate of 5 Li is.critical in the actual one-neutron trans.er mechanis.,and.the valence proton of 209Bi can be excited.to the low-lying excited.s.ate in(^(6)Li,^(5)Li)reaction,unlike in the(d.p)reaction.

关键词： Trans.er reaction Weakly bound.nuclei Cros. s.ction

Quantitative Mapping of Trans.ent Thermod.namic s.ates.in Ultrafas. Las.r Nanos.ructuring of Quartz

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Ultrafas. s.ience 2024年第2期4卷 9-18页

作者： H.d.Nguyen A.Ts.turyan s.s.o Joao R.d.ived. A.Melkonyan C.d.Amico E.Kachan J.P.Colombier G.Kermouche R.s.oian Laboratoire Hubert Curien UMR 5516 CNRSUniversite Jean Monnet42000 Saint EtienneFrance Laboratoire George Fried.l UMR 5307 CNRSEcole des Mines de Saint Etienne42000 Saint EtienneFrance

Und.rs.and.ng material s.ructural reaction to light is.of utmos. importance to ad.ance proces.ing res.lution in ultrafas. las.r volume s.ructuring into the *** thermod.namic pathways.are required.to quench energy trans.ort in the mos. rapid.manner and.to confine the proces. to nanometer lengths.bypas.ing optical *** material d.namics.und.r confinement,with in s.tu acces. to trans.ent local temperature and.d.ns.ty parameters.thus.becomes.key in und.rs.and.ng the *** report in s.tu recons.ruction of thermod.namic s.ates.over the entire matter relaxation path in bulkα-quartz irrad.ated.by ultrafas. nond.ffractive las.r beams.us.ng time-res.lved.qualitative and.quantitative optical phas. *** d.namics.ind.cate rapid.s.atially confined.crys.alline-to-amorphous.trans.tion to a hot d.ns. fus.d.s.lica *** exceed. 20%and.the matrix temperature ris.s.to more than 2,000 K in the firs. *** s.ructural s.ate relaxes.in hund.ed. of *** d.s.ers.on and.time d.s.gn of the optical beam to picos.cond.d.rations.increas.s.the s.atial confinement and.triggers.an extreme nanos.ructuring proces. bas.d.on nanocavitation that occurs.within the amorphizing material,where the low-vis.os.ty phas. lowers.the mechanical requirements.for the *** feature s.ales.of les. than a tenth of the optical wavelength are obtained.in the *** allows.for s.ructural and.morphological nanos.ale material features.und.r 3d.confinement that can engineer optical materials.

关键词： Quartz hund.ed. qualitative

Ferroelectricity Ind.ced.by Oxygen Vacancies.in Rhombohed.al ZrO_(2) Thin Films

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Energy & Environmental Materials 2024年第1期7卷 229-237页

作者： Veniero Lenzi Jos. P.B.s.lva Břetis.av Šmíd.Vlad.mir Matoín Cos.in M.Is.rate Corneliu Ghica Jud.th L.MacManus.d.is.oll Luís.Marques Phys.cs.Center of Minho and.Porto Univers.ties.CF-UM-UP) University of MinhoCampus de Gualtar 4710-057Braga Portugal Laboratory of Phys.cs.for Materials.and.Emergent Technologies LapMETUniversity of Minho4710-057Braga Portugal d.partment of s.rface and.Plas.a s.ience Faculty of Mathematics and PhysicsCharles UniversityV Holešovičkách 218000Prague 8 Czech Republic National Ins.itute of Materials.Phys.cs 105 bis Atomistilor 077125Magurele Romania d.partment of Materials.s.ience and.Metallurgy 27 Charles Babbage Rd.Cambridge CB3 OFSUK

Rhombohed.al phas. Hf_(x)Zr_(1.x)O_(2)(HZO,x from 0 to 1)films.are promis.ng for achieving robus. ferroelectric polarization without the need.for an initial wake-up pre-cycling,as.is.normally the cas. for the more commonly s.ud.ed.orthorhombic ***,a large s.ontaneous.polarization obs.rved.in rhombohed.al films.is.not fully und.rs.ood.and.there are als. large d.s.repancies.between experimental and.theoretical *** this.work,in rhombohed.al ZrO_(2)thin films.we s.ow that oxygen vacancies.are not only a key factor for s.abilizing the phas.,but they are als. a s.urce of ferroelectric polarization in the *** is.s.own experimentally through the inves.igation of the s.ructural properties.chemical compos.tion and.the ferroelectric properties.of the films.before and.after an annealing at mod.rate temperature(400℃)in an oxygen environment to red.ce the V_(o)concentration *** experimental work is.s.pported.by d.ns.ty functional theory(d.T)calculations.which s.ow that the rhombohed.al phas. is.the mos. s.able one in highly oxygen d.fective ZrO_(2)*** d.T calculations.als. s.ow that V_(o)contribute to the ferroelectric *** find.ngs.reveal the importance of V_(o)for s.abilizing rhombohed.al ZrO_(2)thin films.with s.perior ferroelectric properties.

关键词： charged.d.fects ferroelectric polarization rhombohed.al phas. s.ability zirconia