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ALD growth of ultra-thin Co layers on the topological insulator Sb2Te3

Nano Research 2020年第2期13卷 570-575页

作者： Emanuele Longo roberto mantovan Raimondo Cecchini Michael D.Overbeek Massimo Longo Giovanna Trevisi Laura Lazzarini Graziella Tallarida Marco Fanciulli Charles H.Winter Claudia Wiemer CNR-IMM Unit of Agrate BrianzaVia C.Olivetti 2Agrate Brianza(MB)20864Italy Universitàdegli Studi di Milano-Bicocca Dipartimento di Scienza dei MaterialiVia R.Cozzi 55Milano 20125Italy Department of chemistry Wayne State UniversityDetroitMichigan 48202USA CNR-IMEM Parco Area delle Scienze 37/AParma 43124Italy

Taking the full advantage of the conformal growth characterizing atomic layer deposition(ALD),the possibility to grow Co thin films,with thickness from several tens down to few nanometers on top of a granular topological insulator(TI)Sb2Tes film,exhibiting a quite high surface roughness(2-5 nm),was *** study the Co growth on the Sb2Tes substrate,we performed simultaneous Co depositions also on sputtered Pt substrates for *** conducted a thorough chemical-structural characterization of the Co/Sb2Tes and Co/Pt heterostructures,confirming for both cases,not only an excellent conformality,but also the structural continuity of the Co layers.X-ray diffraction(XRD)and high-resolution transmission electron microscope(HRTEM)analyses evidenced that Co on Sb2Te3 grows preferentially oriented along the[0oe]direction,following the underlying rhombohedric ***,Co crystallizes in a cubic phase oriented along the[111]direction when deposited on *** work shows that,in case of deposition of crystalline materials,the ALD surface selectivity and conformality can be extended to the definition of local epitaxy,where in-plane ordering of the crystal structure and mosaicity of the developed crystallized grains are dictated by the underlying ***,a highly sharp and chemically-pure Co/Sb2Tes interface was evidenced,which is promising for the application of this growth process for spintronics.

关键词： atomic layer deposition X-ray diffraction Co-fcc Co-hep antimony telluride metal organic chemical vapor deposition spintronics

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Stability of the ferric state in ZnO

Stability of the ferric state in ZnO

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The 4th Joint Meeting of the International Conference on Hyperfine Interactions and the International Symposium on Nuclear Quadrupole Interactions(HFI/NQI 2012)

作者： Deena Naidoo Haraldur Palle Gunnlaugsson Torben Mφlholt roberto mantovan Hilary Masenda Karl Johnston Krish Bharuth-Ram Haflidi Gislason Guido Langouche Sveinn Olafsson Gerd Weyer Morten Bo Madsen the ISOLDE Collaboration School of Physics University of the WitwatersrandWITS 2050South Africa Department of Physics and Astronomy Aarhus UniversityDK-8000 Aarhus CDenmark Science Institute University of IcelandDunhaga 3IS-107 ReykjavikIceland Laboratorio Nazionale MDM CNR-INFM 20864 Agrate Brianza(MI)Italy PH Dept CERNCH-1211 Geneva 23Switzerland School of Physics University of KwaZulu-NatalDurban 4001South Africa Niels Bohr Institute University of CopenhagenDK-2100 CopenhagenDenmark

ZnO has received much attention in recent years following the theoretical prediction that,if doped with 3d-impurities, it could give rise to room temperature ferromagnetism[1].However,contradicting experimental results are reported in the literature(see e.g.[2]),and the origin of the sometimes observed ferromagnetism is disputed.

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唇癌:临床病理学研究和治疗结果的25年经验

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中国口腔颌面外科杂志 2016年第2期 188-188页

作者： Biasoli R Valente VB mantovan B 张凌

唇癌治疗结果的临床研究报道很少。该文回顾分析25年间唇鳞癌(LSCC)患者的治疗结果及影响预后的相关因素。患者信息包括年龄、性别、种族、职业、吸烟史、饮酒史及家族史。临床病理特征包括发病部位、TNM分期、病理学分级、切缘结果和... 详细信息

唇癌治疗结果的临床研究报道很少。该文回顾分析25年间唇鳞癌(LSCC)患者的治疗结果及影响预后的相关因素。患者信息包括年龄、性别、种族、职业、吸烟史、饮酒史及家族史。临床病理特征包括发病部位、TNM分期、病理学分级、切缘结果和治疗方法。局部复发率、再发率和总生存率为统计变量。采用χ2检验、Fisher精确检验进行统计学分析,生存率采用K-M曲线进行评估。结果:纳入研究的144例患者中,男117例(81.25%),女27例(18.75%),平均年龄60.21岁。134例患者(93.05%)为白人,57例患者(39.58%)的职业与长时间日照相关。初诊LSCC

关键词：治疗结果患者 LSCC 总生存率

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Magnetic properties at Fe sites in Ar implanted ZnO

Magnetic properties at Fe sites in Ar implanted ZnO

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The 4th Joint Meeting of the International Conference on Hyperfine Interactions and the International Symposium on Nuclear Quadrupole Interactions(HFI/NQI 2012)

作者： K.Bharuth-Ram H.Masenda D.Naidoo R.mantovan T.E.Mφlholt S.Geburt H.P.Gunnlaugsson G.Langouche K.Johnston H.P.Gislason S.Olafsson C.Ronning M.B.Madsen G.Weyer School of Physics University of KwaZulu-NatalDurban 4000South Africa School of Physics University of the WitwatersrandSouth Africa

The observation of magnetic behaviour in ZnO implanted with non-metallic ions has led to the development of a theoretical model to explain defect induced magnetism[1],and excited much interest in the role of defects in tailoring the physical properties of ZnO[2]. Ferromagnetic behaviour was observed at room temperature in ZnO after implantation with

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