Open AccessSynthesis and Characterization of CaPd<sub>3</sub>O<sub>4</sub> Crystals
Author(s) -
H. Samata,
Satoshi Tanaka,
S. Mizusaki,
Y. Nagata,
Tadashi C. Ozawa,
Akira Sato,
Kosuke Kosuda
Publication year - 2012
Publication title -
journal of crystallization process and technology
Language(s) - English
Resource type - Journals
eISSN - 2161-7686
pISSN - 2161-7678
DOI - 10.4236/jcpt.2012.21003
Subject(s) - electrical resistivity and conductivity , chemistry , lattice constant , analytical chemistry (journal) , diffraction , physics , optics , chromatography , quantum mechanics
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) Å. 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