Preparation of NdMn_(1-x)Fe_xO_(3+δ) single crystals-Effect of preparation atmosphere and iron doping

Matus Mihalik; S. Matas; M. Vavra; J. Briancin; Marian Mihalik; M. Fitta; V. Kavecansky; J. Kopecek

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Preparation of NdMn_(1-x)Fe_xO_(3+δ) single crystals-Effect of preparation atmosphere and iron doping

机译：NdMn_（1-x）Fe_xO_（3 +δ）单晶的制备-制备气氛和铁掺杂的影响

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We present the study of the effect of crystal growth atmosphere (argon or air) and chemical doping (iron) on the quality and oxygen nonstoichiometry of the single crystals with the general formula NdMn_(1-x)Fe_xO_(3+δ), which were grown by the optical floating zone method. The analysis of the grown ingots showed that in the Ar atmosphere the losses of the oxygen lead to MnO impurities, but in the air atmosphere some Mn~(3+) ions are replaced by Mn~(4+) ions (thence we have observed positive δ). The X-ray Laue diffraction and polarized light microscopy revealed that the twinning of the grown ingots is the common phenomenon. This twinning can be explained by the fact that a/c～1. Neutron diffraction experiment revealed that the preferential growing directions of the compound are (101) and (010).

机译：我们用通式NdMn_（1-x）Fe_xO_（3 +δ）来研究晶体生长气氛（氩气或空气）和化学掺杂（铁）对单晶质量和氧非化学计量的影响，其中通过光学浮区法生长。对生长的锭的分析表明，在Ar气氛中，氧气的损失导致MnO杂质，但是在空气气氛中，一些Mn〜（3+）离子被Mn〜（4+）离子代替（我们已经观察到正δ）。 X射线劳厄衍射和偏光显微镜显示，成晶的孪晶是常见的现象。孪生现象可以用a / c〜1来解释。中子衍射实验表明该化合物的优先生长方向为（101）和（010）。

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来源
《Journal of Crystal Growth》 |2014年第1期|605-607|共3页
作者
Matus Mihalik; S. Matas; M. Vavra; J. Briancin; Marian Mihalik; M. Fitta; V. Kavecansky; J. Kopecek;
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作者单位

Institute of Experimental Physics SAS, Watsonova 47, 040 01 Kosice, Slovak Republic,Helmholtz-Centre Berlin for Materials and Energy, Hahn Meitner Platz 1, D-14 109 Berlin, Germany;

Helmholtz-Centre Berlin for Materials and Energy, Hahn Meitner Platz 1, D-14 109 Berlin, Germany;

Institute of Experimental Physics SAS, Watsonova 47, 040 01 Kosice, Slovak Republic,Institute of Chemistry, Faculty of Science, P.J. Safarik University, Moyzesova 11, 041 54 Kosice, Slovak Republic;

Institute of Ceotechnics SAS, Watsonova 45, 043 53 Kosice, Slovak Republic;

Institute of Experimental Physics SAS, Watsonova 47, 040 01 Kosice, Slovak Republic;

Institute of Nuclear Physics Polish Academy of Sciences, Radzikowskiego 152, 31-342 Krakow, Poland;

Institute of Experimental Physics SAS, Watsonova 47, 040 01 Kosice, Slovak Republic;

Institute of Physics, Na Slovance 2, 182 21 Praha, Czech Republic;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种 eng
中图分类
关键词
A1. Doping; A2. Floating zone technique; B1. Manganites; B1. Rare earth compounds;

机译：A1。掺杂A2。浮动区技术;B1。锰矿;B1。稀土化合物;

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Preparation of NdMn_(1-x)Fe_xO_(3+δ) single crystals-Effect of preparation atmosphere and iron doping

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