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|Title:||Magnetic properties in polycrystalline and single crystal Ca-doped LaCoO3|
Spin glass state
|Publisher:||American Physical Society|
|Citation:||Zeng, R., Debnath, J.C., Chen, D.P., Shamba, P., Wang, J.L., Kennedy, S.J., Campbell, S.J., Silver, T., Dou, S.X. (2011). Magnetic properties in polycrystalline and single crystal Ca-doped LaCoO3, Journal of Applied Physics, Vol. 109(7); Art. No. 07E146. doi:10.1063/1.3562518|
|Abstract:||Polycrystalline (PC) and single crystalline (SC) Ca-doped LaCoO3 (LCCO) samples with the perovskite structure were synthesized by conventional solid-state reaction and the floating-zone growth method. We present the results of a comprehensive investigation of the magnetic properties of the LCCO system. Systematic measurements have been conducted on dc magnetization, ac susceptibility, exchange-bias, and the magnetocaloric effect. These findings suggest that complex structural phases, ferromagnetic (FM), and spin-glass/cluster-spin-glass (CSG), and their transitions exist in PC samples, while there is a much simpler magnetic phase in SC samples. It was also of interest to discover that the CSG induced a magnetic field memory effect and an exchange-bias-like effect, and that a large inverse irreversible magnetocaloric effect exists in this system.(C) 2011 American Institute of Physics. [doi:10.1063/1.3562518]|
|Gov't Doc #:||3818|
|Appears in Collections:||Journal Articles|
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