2004/05/31 by Ryan P. Haggerty, R. Haggerty, Ram Seshadri
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1088/0953-8984/16/36/013
published as J. Phys. Condens. Matter 16 (2004) 6477-6484. · 11 pages and 6 figures
arxiv created 2004/08/03 · openalex publication_date 2004/08/28 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
We have prepared a series of polycrystalline samples La 0.5 Sr 0.5 CoO 3−δ with 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 behaviour of the fully oxygenated compound, and the manner in which ferromagnetic ordering is affected by increasing oxygen non-stoichiometry.