EELS STUDY OF CHEMICAL SEGREGATION AT GRAIN BOUNDARIES IN La_(0.67)Ca_(0.33)MnO_3 FILMS

机译：La_（0.67）Ca_（0.33）MnO_3薄膜中晶界化学偏析的EELS研究

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In this work we present a detailed structural and chemical study of grain boundaries in manganites. The structure of dislocation cores is quite similar to other perovskite systems, such as SrTiO_3. By means of spectroscopic techniques we have shown how cores are non stoichiometric. Electron energy loss spectroscopy also shows how the Mn average oxidation state decreases on the cores. This could be due to the presence of oxygen vacancies. Also, we have found a strong increase of the Ca concentration right on the cores, that could possibly be related to a substitution of Ca ions into Mn sites.

机译：在这项工作中，我们介绍了锰矿中晶界的详细结构和化学研究。位错核的结构与其他钙钛矿体系非常相似，例如SrTiO_3。通过光谱技术，我们已经展示了核是非化学计量的。电子能量损失谱还显示了锰平均氧化态如何在铁心上降低。这可能是由于存在氧空位。此外，我们还发现铁心上的Ca浓度显着增加，这可能与Ca离子取代成Mn位有关。

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《Proceedings vol.2003-29; Epitaxial Growth of Functional Oxides Symposium and Electrochemical Society Meeting; 20031012-17; Orlando,FL(US)》|2003年|P.249-253|共5页
会议地点 OrlandoFL(US)
作者
Maria Varela; Vanessa Pena; Zouhair Sefrioui; Jacobo Santamaria; Stephen J. Pennycook;
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Condensed Matter Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831;

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正文语种 eng
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1. Modeling of colossal magnetoresistance in La_(0.67)Ca_(0.33)MnO_3/Pr_(0.67)Ca_(0.33)MnO_3 superlattices: Comparison with individual (La_(1-y)Pr_y)_(0.67)Ca_(0.33)MnO_3 films [J] . S. Huehn, M. Jungbauer, M. Michelmann, Journal of Applied Physics . 2013,第17pta2期

机译：La_（0.67）Ca_（0.33）MnO_3 / Pr_（0.67）Ca_（0.33）MnO_3超晶格中的巨磁电阻模型：与单个（La_（1-y）Pr_y）_（0.67）Ca_（0.33）MnO_3膜的比较
2. Magnetic Coupling in La_(0.67) Ca_(0.33) MnO_3/La_(0.67) Sr_(0.33) CoO_3/La_(0.67) Ca_(0.33) MnO_3 Trilayer Films [J] . Zhao Kun, Li Ho, Wong Hongkuen Journal of rare earths . 2004,第6期

机译：La_（0.67）Ca_（0.33）MnO_3 / La_（0.67）Sr_（0.33）CoO_3 / La_（0.67）Ca_（0.33）MnO_3三层膜中的磁耦合
3. Magnetic Coupling in La_(0.67) Ca_(0.33) MnO_3/La_(0.67) Sr_(0.33) CoO_3/La_(0.67) Ca_(0.33) MnO_3 Trilayer Films [J] . Zhao Kun, Li Ho, Wong Hongkuen Journal of rare earths . 2004,第6期

机译：La_（0.67）Ca_（0.33）MnO_3 / La_（0.67）Sr_（0.33）CoO_3 / La_（0.67）Ca_（0.33）MnO_3三层膜中的磁耦合
4. EELS STUDY OF CHEMICAL SEGREGATION AT GRAIN BOUNDARIES IN La_(0.67)Ca_(0.33)MnO_3 FILMS [C] . Maria Varela, Vanessa Pena, Zouhair Sefrioui, Epitaxial Growth of Functional Oxides Symposium . 2005

机译：鳗鱼在LA_（0.67）CA_（0.33）MNO_3薄膜中的晶界化学偏析研究
5. Self-Polarization Induced Magnetoelectric Coupling in Lanthanum Strontiummanganite (LA0.67SR0.33MNO3)AND Lead Zirconate Titanate (PBZR0.52TI0.48O3) Thin Film Heterostructures [D] . Xiaoqian, Yu. 2018

机译：镧锶锰（LA0.67SR0.33MNO3）和锆钛酸铅（PBZR0.52TI0.48O3）薄膜异质结构中的自极化感应磁电耦合
6. Enhancement of Low-field Magnetoresistance in Self-Assembled Epitaxial La0.67Ca0.33MnO3:NiO and La0.67Ca0.33MnO3:Co3O4 Composite Films via Polymer-Assisted Deposition [O] . Meng Zhou, Yuling Li, Il Jeon, -1

机译：通过聚合物辅助沉积增强自组装外延La0.67Ca0.33MnO3：NiO和La0.67Ca0.33MnO3：Co3O4复合膜中的低场磁阻
7. Infrared studies of a La_(0.67)Ca_(0.33)MnO_3 single crystal: Optical magnetoconductivity in a half-metallic ferromagnetud [O] . Boris A. V., Kovaleva N. N., Bazhenov A. V., 1999

机译：La_（0.67）Ca_（0.33）MnO_3单晶的红外研究：半金属铁磁体中的光电导率 ud

EELS STUDY OF CHEMICAL SEGREGATION AT GRAIN BOUNDARIES IN La_(0.67)Ca_(0.33)MnO_3 FILMS

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