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M. Yonemura
Department of Materials Structure Science, Sokendai (The Graduate University for Advanced Studies), Tokai, Ibaraki 319-1106, Japan
Materials Science & Nanotechnology

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Synthesis, Structural and Magnetic Properties of La0.5Ba0.5CoO2.75+x Z. Tan; P. Miao; Y. Ishikawa; M. Hagihala; S. Lee; S. Torii; M. Yonemura; T. Kamiyama
Atom Indonesia Vol 44, No 1 (2018): April 2018
Publisher : PPIKSN-BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (43.565 KB) | DOI: 10.17146/aij.2018.781

Abstract

Hole doping to the Co3+ ion in cobaltite perovskites can significantly modify the electromagnetic properties. We prepared the hole-doped cobaltite perovskites La0.5Ba0.5CoO2.75+x (x = 0.06 and x = 0.15). Neutron powder diffraction and dc-magnetization experiments were performed to investigate the crystal structure and magnetic properties. We found that both of the samples have the cubic crystal structure with space group Pmm in all the measured temperatures. Ferromagnetic transition occurs at 160K in x = 0.15 sample. For x = 0.06, we found the short-range ordered ferromagnetic state and a long-range ordered antiferromagnetic state coexist in low temperature.
Co-Authors M. Hagihala P. Miao S. Lee S. Torii T. Kamiyama Y. Ishikawa Z. Tan