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Synthesis and Characterization of CaPd3O4 Crystals

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DOI: 10.4236/jcpt.2012.21003    3,751 Downloads   8,006 Views   Citations


A new method for the crystal growth of alkaline-earth palladate CaPd3O4 was developed. The crystals were synthesized on a voltage-applied electrode in a molten chloride solvent. The maximum length of the crystal was about 1.5 mm. The X-ray diffraction data were refined well by assuming a cubic structure of the space group Pm n, and the lattice constant a was 5.7471 (10) ?. The temperature dependence of the resistivity showed semiconductor-like characteristics with a very small activation energy Ea of 0.45 meV at low temperatures, and the resistivity at 300 K was 0.1 cm. The temperature dependence of the molar magnetic susceptibility showed the Curie-Weiss paramagnetic behavior with a small molar Curie constant Cmol of 5.0(1) × 10-3 emu K/(mol Oe), indicating the existence of localized spin moments.

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H. Samata, S. Tanaka, S. Mizusaki, Y. Nagata, T. Ozawa, A. Sato and K. Kosuda, "Synthesis and Characterization of CaPd3O4 Crystals," Journal of Crystallization Process and Technology, Vol. 2 No. 1, 2012, pp. 16-20. doi: 10.4236/jcpt.2012.21003.


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