Author： Rong-Juan Wang Yuan-Yuan Zhu Li Wang Yong Liu Jing Shi Rui Xiong Jun-Feng Wang
Publisher： IOP Publishing
E-ISSN： 1741-4199|24|9|97501-97506
ISSN： 1674-1056
Source： Chinese Physics B, Vol.24, Iss.9, 2015-09, pp. : 97501-97506
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
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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