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Preparation and properties of antiperovskite-type nitrides: InNNi3 and InNCo3 |
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| Authors: | WH Cao B He CZ Liao LH Yang C Dong |
| Institution: | a National Laboratory for Superconductivity, Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Science, Beijing 100190, China b College of Physical Science and Technology, Guangxi University, Nanning 530004, China c Luzhou Medical College, Luzhou, Sichuan 646000, China |
| Abstract: | Two antiperovskite-type ternary nitrides of InNM3 (M=Ni, Co) have been synthesized from In2O3 and Ni or Co powders under NH3 atmosphere at 600 °C. InNCo3 is a new ternary nitride whereas InNNi3 was previously reported as InN0.5Ni3 with different nitrogen content. The lattice parameters refined by Rietveld method are 3.8445(1) Å for InNNi3 and 3.8541(7) Å for InNCo3, respectively. Both nitrides show metallic behaviors and below 70 K the T2 temperature dependence of resistivity was observed indicative of a Fermi liquid behavior. The temperature dependence of the field-cooling (FC) and zero-field-cooling (ZFC) magnetization and time decay of thermoremanent magnetization indicate the spin-glass-like behavior in InNM3 (M=Ni, Co). The freezing temperatures for this behavior, Tf, are about 300 K for InNNi3 and 10 K for InNCo3, respectively. |
| Keywords: | Nitride Antiperovskite Nitrogen content Spin-glass-like |
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