CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Growth and characterization of CaCu3Ru4O12 single crystal |
Wang Rong-Juan (王蓉娟)a, Zhu Yuan-Yuan (朱媛媛)a, Wang Li (王理)a, Liu Yong (刘雍)a, Shi Jing (石兢)a, Xiong Rui (熊锐)a, Wang Jun-Feng (王俊峰)b |
a Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, China;
b Wuhan High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China |
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Abstract High-quality single crystals of A-site ordered perovskite oxides CaCu3Ru4O12 were synthesized by flux method with CuO serving as a flux. The typical size of these single crystals was around 1× 1× 1 mm3 and the lattice constant was determined to be 7.430± 0.0009 Å by using x-ray single crystal diffraction. The surfaces of the samples were identified to be (100) surface. The high quality of the single crystal samples was confirmed by the rocking curve data which have a full width at half maximum of approximately 0.02 degree. The x-ray photoelectron spectroscopy measurement was performed and the temperature-dependent specific heat, magnetic susceptibility, and electric resistivity were measured along the [100] direction of the single crystals. All these measurements showed that the physical properties of CaCu3Ru4O12 single crystals are similar to that of polycrystals. However, the single crystals have a lower Curie susceptibility tail and a smaller residual resistivity than polycrystals, which indicates that the amount of paramagnetic impurities can be controlled by tuning the number of defects in CaCu3Ru4O12 samples.
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Received: 22 April 2015
Revised: 25 May 2015
Accepted manuscript online:
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PACS:
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75.30.Mb
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(Valence fluctuation, Kondo lattice, and heavy-fermion phenomena)
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81.10.-h
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(Methods of crystal growth; physics and chemistry of crystal growth, crystal morphology, and orientation)
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71.27.+a
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(Strongly correlated electron systems; heavy fermions)
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74.70.Pq
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(Ruthenates)
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Fund: Project supported by the National Basic Research Program of China (Grant No. 2012CB821404), the National Natural Science Foundation of China (Grant Nos. 51172166 and 61106005), the National Science Fund for Talent Training in Basic Science of China (Grant No. J1210061), and the Doctoral Fund of Ministry of Education of China (Grant No. 20110141110007). |
Corresponding Authors:
Liu Yong, Shi Jing
E-mail: yongliu@whu.edu.cn;jshi@whu.edu.cn
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Cite this article:
Wang Rong-Juan (王蓉娟), Zhu Yuan-Yuan (朱媛媛), Wang Li (王理), Liu Yong (刘雍), Shi Jing (石兢), Xiong Rui (熊锐), Wang Jun-Feng (王俊峰) Growth and characterization of CaCu3Ru4O12 single crystal 2015 Chin. Phys. B 24 097501
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