Growth and properties of strontium cobaltate single crystals

Research paper by H. Takei, H. Oda, H. Watanabe, I. Shindo

Indexed on: 01 Mar '78Published on: 01 Mar '78Published in: Journal of Materials Science


Single crystals of strontium cobaltate with oxygen-deficient composition have been prepared by the floating-zone method using a lamp image furnace. Chemical and X-ray analyses showed that the composition was SrCoO2.70 with a doubled perovskite structure of cubic cells, a0=7.710±0.001 Å. The crystal was ferromagnetic and its Curie temperature was 150 K. The effective Bohr magneton per ion of Co4+ was 1.21, suggesting that Co4+ is almost in the low spin state.