High pressure floating-zone growth and property characterization of Cr-doped hexagonal YMnO3 crystals

High pressure floating-zone growth and property characterization of Cr-doped hexagonal YMnO3 crystals
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Cr掺杂六方YMnO3晶体的高​​压浮区生长及性能表征

DOI:
10.1016/j.jmst.2017.04.014
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发表时间:
2017-10
影响因子:
10.9
通讯作者:
Cao Chongde
Cao Chongde
中科院分区:
材料科学1区
文献类型:
--
作者:
Wan Feng;Bai Xiaojun;Song Kaikai;Zheng Jianbang;Lin Xin;Cao Chongde

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用高压光学浮区法生长了掺Cr的YMnO_3单晶。生长的晶体的尺寸通常为60-70 mm长和4-5 mm直径。通过粉末X射线衍射和扫描电子显微镜分析了生长的晶体的结构。研究了晶体生长过程中的缺陷,包括小角度晶界和夹杂物。不同部位存在轻微的缺铬现象。讨论了晶体生长过程中缺陷与生长条件的关系。在30 K以下,样品的磁性表现为自旋玻璃相特征,具有弱铁磁行为。
Large crystal growth of Cr-dopedh-YMnO3has been investigated by using a high pressure optical floating-zone method. The size of the grown crystals is typically 60–70 mm in length and 4–5 mm in diameter. The structure of the grown crystals is analyzed by powder X-ray diffraction and scanning electron microscopy. The defects in the as-grown crystals, including low-angle grain boundary and inclusions are studied. An off-stoichiometric phenomenon is found with a slight Cr deficiency in different parts. The relationship between defects and growth conditions during crystal growth is also discussed. The magnetic properties show spin-glass phase features with weak ferromagnetic behavior below 30 K.
DOI: 10.1088/0953-8984/24/23/235402
发表时间: 2012-06
期刊: Journal of Physics: Condensed Matter
影响因子: --
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