Oxygen stoichiometry, crystal structure, and magnetism in La$_{0.5}$Sr$_{0.5}$CoO$_{3-δ}$

Ryan P. Haggerty; Ram Seshadri

doi:10.1088/0953-8984/16/36/013

paper

Oxygen stoichiometry, crystal structure, and magnetism in La $_{0.5}$ Sr $_{0.5}$ CoO $_{3 - δ}$

arXiv:cond-mat/0405535 · doi:10.1088/0953-8984/16/36/013

Abstract

We have prepared a series of polycrystalline samples La $_{0.5}$ Sr $_{0.5}$ CoO $_{3 - δ}$ } with $0 < δ \leq 0.21$ and characterized their oxygen content, crystal structure, and magnetic properties. While the fully oxygenated samples are good ferromagnets, samples with larger $δ$ values display increasingly broad magnetic transitions. The saturation magnetization at 5 K falls rapidly as $δ$ increases. First principles electronic structure calculations provide insights into the magnetic behavior of the fully oxygenated compound, and the manner in which ferromagnetic ordering is affected by increasing oxygen non-stoichiometry.

arXiv comment11 pages and 6 figures

References in corpus (2)

Structural phenomena associated with the spin-state transition in LaCoO3
Evidence for orbital ordering in LaCoO3

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Oxygen stoichiometry, crystal structure, and magnetism in La0.5​Sr0.5​CoO3−δ​

Abstract

References in corpus (2)

Cited by in corpus (3)

Oxygen stoichiometry, crystal structure, and magnetism in La $_{0.5}$ Sr $_{0.5}$ CoO $_{3 - δ}$