High pressure floating-zone growth and property characterization of Cr-doped hexagonal YMnO3 crystals
来源期刊:JOURNAL OF MATERIALS SCIENCE TECHNOLOG2017年第9期
论文作者:Feng Wan Xiaojun Bai Kaikai Song Jianbang Zheng Xin Lin Chongde Cao
文章页码:1061 - 1066
摘 要:Large crystal growth of Cr-doped h-YMnO3 has been investigated by using a high pressure optical floatingzone 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.
Feng Wan1,Xiaojun Bai1,Kaikai Song2,Jianbang Zheng1,Xin Lin3,Chongde Cao1
1. Department of Applied Physics,Northwestern Polytechnical University2. School of Mechanical,Electrical & Information Engineering,Shandong University (Weihai)3. State Key Laboratory of Solidification Processing,School of Materials Science and Engineering,Northwestern Polytechnical University
摘 要:Large crystal growth of Cr-doped h-YMnO3 has been investigated by using a high pressure optical floatingzone 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.
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