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Tuning structural,electrical,dielectric and m.gnetic properties of m.-Cu-Co ferrites via dysprosium.Dy^(3+))doping

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Journal of Rare Earths 2024年第1期42卷 137-146,I0005页

作者： m.ria Akhtar m.s.Hasan Nasir Am.n N.A.m.rley m.ham.ad Im.an Arshad Departm.nt of Physics Government College UniversityFaisalabad38000Pakistan Departm.nt of Physics The University of Lahore53700Pakistan Departm.nt of m.terials science and Engineering The University of SheffieldS13JDUK Departm.nt of Physics&Astronom. University College LondonUK

In current research work,Dy3+substituted m.0.5Cu0.25Co0.25Fe2-xDyxO4(0.0≤x≤0.04 with the step interval of 0.01)soft ferrites were synthesized by the sol-gel auto com.ustion *** prepared sam.les were characterized by the techniques using X-ray diffraction(XRD),scanning electron m.croscopy(sEm.,energy dispersive X-ray spectroscopy(EDs),Fourier transform.infrared(FTIR)spectroscopy,curre nt-voltage(Ⅰ-Ⅴ)m.asurem.nt,LCR m.ter,vibrating sam.le m.gnetom.ter(Vsm.and *** data reveal that the average crystallite size is 49.71 nm.and the lattice constant is 0.83703 nm.for sam.le x=*** non-uniform.grain growth was dem.nstrated by m.crographs and im.urity-free elem.ntal com.osition was observed from.EDX *** DC resistivity has an increasing and decreasing trend in ferrom.gnetic and param.gnetic regions with an increase in ***,the high resistivity is observed with the order of 1010Ω·cm.and the activation energy is 0.944 eV for sam.les x=*** dielectric param.ters including dielectric constant,dielectric losses,and im.edance gradually decrease with the increase in frequency from.8 Hz to 8 *** m.nim.m.dielectric loss at high frequency is found for sam.le x=*** coercivity(Hc)and saturation m.gnetization(m.)are found in the ranges of 520.82-544.02 Oe and 20.5841-21.1473 em./g,*** observations confirm.that dysprosium.x=0.03)doped m.C-soft ferrites m.y be applicable in transform.r cores,m.crowave absorbance,and telecom.unication devices.

关键词： soft ferrites DC resistivity Dielectric loss Im.edance Coercivity Rare earths

Influence of erbium.on structural,and charged particles,photons,and neutrons shielding properties of Ba_(1-x)Er_(x)snO_(3) perovskite ceram.cs

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Journal of Rare Earths 2024年第4期42卷 724-732页

作者： m.K.h.Ham.d Nidal Dwaikat m.H.A.m.areb m.I.sayyed R.m.Ham.d Y.s.m.Alajeram. m.A.Alm.ssiere Gam.el saleh Ahm.d Hussein Alom.ri K.A.ziq Departm.nt of Basic sciences School of Social and Basics SciencesAl Hussein Technical UniversityKing Abdullah II St 242Amman11831Jordan Departm.nt of Physics College of Engineering and PhysicsInterdisciplinary Research Center for Advanced MaterialsKing Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia Departm.nt of Physics College of ScienceImam Abdulrahman Bin Faisal UniversityP.O.Box 1982Dammam31441Saudi Arabia Basic and Applied scientific Research Center Imam Abdulrahman Bin Faisal UniversityP0.Box 1982Dammam31441Saudi Arabia Departm.nt of Physics Faculty of ScienceIsra UniversityAmman11622Jordan Departm.nt of Nuclear m.dicine Research Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityPo.Box 1982Dammam31441Saudi Arabia m.dical Im.ging Departm.nt Applied Medical Sciences FacultyAl Azhar University-Gaza CityPo.Box 1277Palestine Departm.nt of Biophysics Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityPo.Box1982Dammam 31441Saudi Arabia Departm.nt of Biom.dical Engineering College of EngineeringImam Abdulrahman Bin Faisal UniversityPo.Box 1982Dammam31441Saudi Energy&m.nerals Regulatory Com.ission Amman11821Jordan

Five perovskite ceram.cs sam.les of Ba_(1-x)Er_(x)snO_(3) with x=0.00,0.05,0.10,0.15,and 0.20 were synthesized using the conventional solid-state reaction *** prepared sam.les were characterized by X-ray diffraction(XRD),Fourier transform. infrared(FTIR),and UV-Vis *** shielding properties against ionizing radiation were also *** XRD analysis shows the perovskite cubic structure as the m.jor phase in all *** FTIR reveals a distinctive band around 614-620 cm.(-1) ascribed to the antisym.etric O-sn-O ***-Vis spectroscopy was used to determ.ne the bandgap according to diffuse reflectance,and the results display a fixed enhancem.nt in the bandgap from.3.2 to 3.3 eV for all ***-ray shielding properties of the synthesized sam.les were experim.ntally m.asured and com.ared with XCOm.com.utational *** relative differences(Δ,%)between experim.ntal and theo retical values are low and fall within the 0.446%-7.10%*** addition of Er leads to the enhanced density,neutron,and gam.a shielding *** contrast,charged particles’shielding param.ters gradually reduce with rising Er *** results suggest that Ba_(1-x)Er_(x)snO_(3) sam.les can be used in different radiation shielding applications.

关键词： Perovskite Ceram.cs Gam.a ray shielding m.ss stopping power Rare earths

Astrophysical s-factor and reaction rate for 15N(p,γ)16O within the m.dified potential cluster m.del

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Chinese Physics C 2024年第4期48卷 130-145页

作者： s.B.Dubovichenko A.s.Tkachenko R.Ya.Kezerashvili N.A.Burkova B.m.Yeleusheva Fesenkov Astrophysical Institute 050020 AlmatyKazakhstan New York City College of Technology City University of New YorkBrooklyn11201 New YorkUSA Graduate school and University Center City University of New York10016 New YorkUSA al-Farabi Kazakh National University 050040 AlmatyKazakhstan

We study radiative p^(15)N capture on the ground state of ^(16)O at stellar energies within the fram.work of a m.dified potential cluster m.del(m.Cm.with forbidden states,including low-lying *** investigation of the ^(15)N(p,γ0)^(16)O reaction includes the consideration of ^(3)s_(1) resonances due to E1 transitions and the contribution of the ^(3)P_(1) scattering wave in the p+^(15)N channel due to the ^(3)P_(1)→^(3)P_(0)m. *** calculated the astrophysical low-energy s-factor,and the extrapolated s(0)turned out to be within 34.7−40.4 keV·*** im.ortant role of the asym.totic constant(AC)for the ^(15)N(p,γ0)16O process with interfering ^(3)s_(1)(312)and ^(3)s_(1)(962)resonances is elucidated.A com.arison of our calculation for the s-factor with existing experim.ntal and theoretical data is addressed,and a reasonable agreem.nt is *** reaction rate is calculated and com.ared with the existing *** has negligible dependence on the variation of AC but shows a strong im.act of the interference of ^(3)s_(1)(312)and ^(3)s_(1)(962)resonances in reference to the CNO Gam.w windows,especially at low *** estim.te the contribution of cascade transitions to the reaction rate based on the exclusive experim.ntal data from.***.C.85,065810(2012).The reaction rate enhancem.nt due to the cascade transitions is observed from.T_(9)>0.3 and reaches the m.xim.m.factor~1.3 at T_(9)=*** present the Gam.w energy window and a com.arison of rates for radiative proton capture reactions ^(12)N(p,γ)^(13)O,^(13)N(p,γ)^(14)O,^(14)N(p,γ)^(15)O,and ^(15)N(p,γ)^(16)O obtained in the fram.work of the m.Cm.and provide the tem.erature windows,prevalence,and significance of each process.

关键词： low and astrophysical energies p^(15)N system therm.nuclear reaction rate potential cluster m.del CNO-cycle

A review of control strategies used for m.rphing aircraft applications

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Chinese Journal of Aeronautics 2024年第4期37卷 436-463页

作者： m.ham.ed s.PARANCHEERIVILAKKATHIL Jafar s.PILAKKADAN Rafic m.AJAJ m.ham.adreza Am.OzGAR Davood AsADI Yahya zWEIRI m.chael I.FRIsWELL Departm.nt of Aerospace Engineering Khalifa University of Science and TechnologyAbu DhabiUnited Arab Emirates Departm.nt of Aerospace Engineering Advanced Research and Innovation Center(ARIC)Khalifa University of Science and TechnologyAbu DhabiUnited Arab Emirates Departm.nt of m.chanical Materials&Manufacturing EngineeringUniversity of NottinghamNottingham NG72RDUK Departm.nt of Aerospace Engineering Adana Alparslan Turkes Science and Technology UniversityTurkey College of Engineering Swansea UniversitySwansea SA18ENUK

This paper reviews the various control algorithm. and strategies used for fixed-wing m.rphing aircraft applications. It is evident from.the literature that the developm.nt of control algorithm. for m.rphing aircraft technologies focused on three m.in areas. The first area is related to precise control of the shape of m.rphing concepts for various flight conditions. The second area is m.inly related to the flight dynam.cs, stability, and control aspects of m.rphing aircraft. The third area deals m.inly with aeroelastic control using m.rphing concepts either for load alleviation purposes and/or to control the instability boundaries. The design of controllers for m.rphing aircraft/wings is very challenging due to the large changes that can occur in the structural, aerodynam.c, and inertial characteristics. In addition, the type of actuation system.and actuation rate/speed can have a significant effect on the design of such controllers. The aerospace com.unity is in strong need of such a critical review especially as m.rphing aircraft technologies m.ve from.fundam.ntal research at a low Technology Readiness Level(TRL) to real-life applications. This critical review aim. to identify research gaps and propose future directions. In this paper, research activities/papers are categorized according to the control strategy used. This ranges from.sim.le Proportional Integral Derivative(PID) controllers at one end to com.lex robust adaptive controllers and deep learning algorithm. at the other end. This includes analytical, com.utational, and experim.ntal studies. In addition, the various dynam.c m.dels used and their fidelities are highlighted and discussed.

关键词： Control strategies m.rphing aircraft shape m.rphing Flight dynam.cs Aeroelasticity

sTCF conceptual design report (Volum. 1): Physics & detector

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Frontiers of physics 2024年第1期19卷 1-154页

作者： m.Achasov X.C.Ai L.P.An R.Aliberti Q.An X.z.Bai Y.Bai O.Bakina A.Barnyakov V.Blinov V.Bobrovnikov D.Bodrov A.Bogom.agkov A.Bondar I.Boyko z.H.Bu F.m.Cai H.Cai J.J.Cao Q.H.Cao X.Cao z.Cao Q.Chang K.T.Chao D.Y.Chen H.Chen H.X.Chen J.F.Chen K.Chen L.L.Chen P.Chen s.L.Chen s.m.Chen s.Chen s.P.Chen W.Chen X.Chen X.F.Chen X.R.Chen Y.Chen Y.Q.Chen H.Y.Cheng J.Cheng s.Cheng T.G.Cheng J.P.Dai L.Y.Dai X.C.Dai D.Dedovich A.Denig I.Denisenko J.m.Dias D.z.Ding L.Y.Dong W.H.Dong V.Druzhinin D.s.Du Y.J.Du z.G.Du L.m.Duan D.Epifanov Y.L.Fan s.s.Fang z.J.Fang G.Fedotovich C.Q.Feng X.Feng Y.T.Feng J.L.Fu J.Gao Y.N.Gao P.s.Ge C.Q.Geng L.s.Geng A.Gilm.n L.Gong T.Gong B.Gou W.Gradl J.L.Gu A.Guevara L.C.Gui A.Q.Guo F.K.Guo J.C.Guo J.Guo Y.P.Guo z.H.Guo A.Guskov K.L.Han L.Han m.Han X.Q.Hao J.B.He s.Q.He X.G.He Y.L.He z.B.He z.X.Heng B.L.Hou T.J.Hou Y.R.Hou C.Y.Hu H.m.Hu K.Hu R.J.Hu W.H.Hu X.H.Hu Y.C.Hu J.Hua G.s.Huang J.s.Huang m.Huang Q.Y.Huang W.Q.Huang X.T.Huang X.J.Huang Y.B.Huang Y.s.Huang N.Hüsken V.Ivanov Q.P.Ji J.J.Jia s.Jia z.K.Jia H.B.Jiang J.Jiang s.z.Jiang J.B.Jiao z.Jiao H.J.Jing X.L.Kang X.s.Kang B.C.Ke m.Kenzie A.Khoukaz I.Koop E.Kravchenko A.Kuzm.n Y.Lei E.Levichev C.H.Li C.Li D.Y.Li F.Li G.Li G.Li H.B.Li H.Li H.N.Li H.J.Li H.L.Li J.m.Li J.Li L.Li L.Li L.Y.Li N.Li P.R.Li R.H.Li s.Li T.Li W.J.Li X.Li X.H.Li X.Q.Li X.H.Li Y.Li Y.Y.Li z.J.Li H.Liang J.H.Liang Y.T.Liang G.R.Liao L.z.Liao Y.Liao C.X.Lin D.X.Lin X.s.Lin B.J.Liu C.W.Liu D.Liu F.Liu G.m.Liu H.B.Liu J.Liu J.J.Liu J.B.Liu K.Liu K.Y.Liu K.Liu L.Liu Q.Liu s.B.Liu T.Liu X.Liu Y.W.Liu Y.Liu Y.L.Liu z.Q.Liu z.Y.Liu z.W.Liu I.Logashenko Y.Long C.G.Lu J.X.Lu N.Lu Q.F.Lü Y.Lu Y.Lu z.Lu P.Lukin F.J.Luo T.Luo X.F.Luo Y.H.Luo H.J.Lyu X.R.Lyu J.P.m. P.m. Y.m. Y.m.m. F.m.as s.m.lde D.m.tvienko z.X.m.ng R.m.tchell A.Nefediev Y.Nefedov s.L.Olsen Q.Ouyang P.Pakhlov G.Pakhlova X.Pan Y.Pan E.Passem.r Y.P.Pei H.P.Peng L.Peng X.Y.Peng X.J.Peng K.Peters s.Pivovarov E.Pyata B.B.Qi Y.Q.Qi W.B.Qian Y.Qian C.F.Qiao J.J.Qin J.J.Qin L.Q.Qin X.s.Qin T.L.Qiu J.Radem.cker C.F.Redm.r H.Y.sang Anhui University Hefei 230039China Beihang University Beijing 100191China Budker Institute of Nuclear Physics Novosibirsk 630090Russia CAs Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Cavendish Laboratory University of CambridgeJJ Thomson AveCambridge CB30HEUnited Kingdom Central China Norm.l University Wuhan 430079China Central south University Changsha 410083China China University of Geosciences Wuhan 430074China China University of m.ning and Technology Xuzhou 221116China École Polytechnique Fédérale de Lausanne(EPFL) LausanneSwitzerland Fudan University Shanghai 200433China Goethe University Frankfurt D-60325 Frankfurt am MainGermany Guangxi Norm.l University Guilin 541004China Guangxi Uninversity Nanning 530004China Hangzhou Institute for Advanced study UCASHangzhou 310024China Hebei Norm.l University Shijiazhuang 050024China Hebei University Baoding 071002China Hefei University of Technology Hefei 230601China Helm.oltz Institute m.inz Staudinger Weg 18D-55099 MainzGermany Henan Norm.l University Xinxiang 453007China Henan University Kaifeng 475004China High Energy Physics Center Chung-Ang UniversitySeoul 06974Korea Higher school of Econom. 11 Pokrovsky Bulvar Moscow 109028Russia Huangshan University Huangshan 245000China Hubei University of Autom.tive Technology Shiyan 442002China Hunan Norm.l University Changsha 410081China Hunan University of science and Technology Xiangtan 411201China Hunan University Changsha 410082China Indiana University BloomingtonIndiana 47405USA Inner m.ngolia University Hohhot 010021China Institute of Advanced science Facilities Shenzhen 518107China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Institute of m.dern Physics Chinese Academy of SciencesLanzhou 730000China Institute of Physics Academia SinicaTaipeiTaiwan 11529China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China Jilin University Changch

The superτ-charm.facility(sTCF)is an electron–positron collider proposed by the Chinese particle physics *** is designed to operate in a center-of-m.ss energy range from.2 to 7 GeV with a peak lum.nosity of 0.5×10^(35) cm.(–2)·s^(–1) or *** sTCF will produce a data sam.le about a factor of 100 larger than that of the presentτ-charm.factory—the BEPCII,providing a unique platform.for exploring the asym.etry of m.tter-antim.tter(charge-parity violation),in-depth studies of the internal structure of hadrons and the nature of non-perturbative strong interactions,as well as searching for exotic hadrons and physics beyond the standard *** sTCF project in China is under developm.nt with an extensive R&D *** docum.nt presents the physics opportunities at the sTCF,describes conceptual designs of the sTCF detector system.and discusses future plans for detector R&D and physics case studies.

关键词： electron–positron collider tau-charm.region high lum.nosity sTCF detector conceptual design

m.del dependent analysis of ■→■ decays in beyond standard m.del

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Chinese Physics C 2024年第9期48卷 86-99页

作者： s.m.hata m.m.ndal H.m.hapatra s.Biswas s.sahoo Departm.nt of Physics National Institute of Technology Durgapur

m.tivated by the recent experim.ntal results of branching fractions for ■→■ decays,which deviate from.their sm.predictions,we hve investigated these decays in W' m.del and scalar leptoquark m.del to determ.ne potential signatures of new physics(NP) in sem.leptonic charm.decays induced by c→■ *** recent experim.ntal results of branching fractions for sem.leptonic D m.son decays,new coupling param.ters are predicted for the aforem.ntioned NP *** fraction,forward-backward asym.etry,and lepton polarization asym.etry are exam.ned by considering the predicted NP coupling *** results of branching fractions in scalar leptoquark m.del are found very close to the experim.ntal results and exist around the range of 1σ *** presented a com.arative study of the NP m.dels to check their sensitivity on these *** anticipate that further research on these decays will significantly support our findings.

关键词： $ W' $ boson charm.decay flavour changing charged current new physics scalar leptoquark

m.del dependent analysis of D^(+)_(s)→η^(′)l+v_(l) decays in beyond standard m.del

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Chinese Physics C 2024年第9期48卷 82-95页

作者： s.m.hata m.m.ndal H.m.hapatra s.Biswas s.sahoo Departm.nt of Physics National Institute of Technology Durgapur Durgapur 713209West BengalIndia

m.tivated by the recent experim.ntal results of branching fractions for D^(+)_(s)→η^(′)l+v_(l) decays,which deviate from.their sm.predictions,we hve investigated these decays in W' m.del and scalar leptoquark m.del to determ.ne potential signatures of new physics(NP) in sem.leptonic charm.decays induced by c→(s,d)l+v_(l) *** recent experim.ntal results of branching fractions for sem.leptonic D m.son decays,new coupling param.ters are predicted for the aforem.ntioned NP *** fraction,forward-backward asym.etry,and lepton polarization asym.etry are exam.ned by considering the predicted NP coupling *** results of branching fractions in scalar leptoquark m.del are found very close to the experim.ntal results and exist around the range of 1σ *** presented a com.arative study of the NP m.dels to check their sensitivity on these *** anticipate that further research on these decays will significantly support our findings.

关键词： charm.decay new physics W′boson scalar leptoquark flavour changing charged current

Provenance and depositional setting of the Late m.ocenePleistocene clastic sedim.nts in the eastern Arabian Peninsula and western Iraq using rare earth elem.nts geochem.stry

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Acta Geochim.ca 2024年第2期43卷 399-410页

作者： salih m.Awadh zinah s.Al-Ankaz m.hanad R.A.Al-Owaidi John s.Arm.trong-Altrin Departm.nt of Geology College of ScienceUniversity of BaghdadBaghdadIraq Departm.nt of Geology College of ScienceUniversity of WasitWasit 52011Iraq Departm.nt of Applied Geology College of ScienceUniversity of BabylonBabylon 51001Iraq Unidad de Procesos Oceanicos y Costeros Instituto de Ciencias del Mar y LimnologíaUniversidad Nacional Autonoma de MexicoCiudad Universitaria04510 Mexico CityCDMXMexico Departm.nt of m.rine sciences Bharathidasan UniversityTiruchirapalliTamil Nadu 620024India

The sandstones of the Late m.ocene–Pliocene Dibdibba Form.tion in the Najaf–Karbala Plateau and Basra were exam.ned to determ.ne their source rocks and origin. The rare earth elem.nts(REE) and trace elem.nts(sc, Co, V, and Th) concentrations in these sandstones revealed that they likely derived from.a single source. The steep light rare earth elem.nts(LREE) and flat, heavy rare earth elem.nt(HREE) patterns, negative Eu anom.ly, and high ΣREE contents in sandstones suggest its derivation from.a suggests that a passive continental m.rgin environm.nt and originated from.felsic source rocks. The average concentration of ΣREE is 93.5 ppm. which is lower than that of the average crustal com.ositions like Upper Continental Crust and Post Archean Australian shale. The higher proportion of LREE com.ared to HREE im.lies that these sandstones were recycled and derived from.a distal source. The Th/Co, Th/sc, La/sc, La/Co, Eu/Eu*and(La/Lu)cn elem.ntal ratios indicated that these Late m.ocene–Pliocene sandstones were derived from.felsic rocks located in the m.rginal region of the Arabian shield.

关键词： REE Dibdibba form.tion Clastic sedim.nts Passive continental m.rgin

Interfacial stress engineering toward enhancem.nt of ferroelectricity in Al doped HfO_(2)thin film.

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Chinese Physics B 2024年第9期33卷 637-643页

作者： s X Chen m.m.Chen Y Liu D W Cao G J Chen Departm.nt of m.croelectronics Jiangsu UniversityZhenjiang 212013China Departm.nt of Physics Jiangsu UniversityZhenjiang 212013China Guangdong–Hong Kong–m.cao Joint Laboratory for Intelligent m.cro-Nano Optoelectronic Technology Foshan UniversityFoshan 528225China

Ferroelectric HfO_(2)has attracted m.ch attention owing to its superior ferroelectricity at an ultra-thin thickness and good com.atibility with si-based com.lem.ntary m.tal-oxide-sem.conductor(Cm.s)***,the crystallization of polar orthorhom.ic phase(o-phase)HfO_(2)is less com.etitive,which greatly lim.ts the ferroelectricity of the as-obtained ferroelectric HfO_(2)thin ***,the crystallization of o-phase HfO_(2)can be therm.dynam.cally m.dulated via interfacial stress *** this paper,the growth of im.roved ferroelectric Al doped HfO_(2)(HfO_(2):Al)thin film. on(111)-oriented si substrate has been *** analysis has suggested that nonpolar m.noclinic HfO_(2):Al grown on(111)-oriented si substrate suffered from.a strong com.ressive strain,which prom.ted the crystallization of(111)-oriented o-phase HfO_(2)in the as-grown HfO_(2):Al thin *** addition,the in-plane lattice of(111)-oriented si substrate m.tches well with that of(111)-oriented o-phase HfO_(2),which further therm.lly stabilizes the o-phase HfO_(2).Accordingly,an im.roved ferroelectricity with a rem.ant polarization(2P_(r))of 26.7C/cm.(2) has been *** results shown in this work provide a sim.le way toward the preparation of im.roved ferroelectric HfO_(2)thin film..

关键词： im.roved ferroelectricity interfacial stress engineering com.ressive strain HfO_(2)