A New Ferromagnetic Amorphous Oxide of the La-Sr-Mn-B-O System
- 1 May 1988
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 27 (5A) , L883-885
- https://doi.org/10.1143/jjap.27.l883
Abstract
Amorphous 0.5La1-x Sr x MnO3 0.5B2O3 (0.2≤x≤1.0) oxides were produced by melt quenching using a twin-roll technique. They were characterized by high crystallization temperatures above 920 K and transparency. Curie temperature is higher than 380 K over a wide range of Sr concentrations (0.3≤x≤1.0), thus differing from crystalline La1-x Sr x MnO3 perovskite. The temperature dependence of magnetization in the amorphous state is similar to that for crystalline perovskite, suggesting ferromagnetism in the present amorphous oxides. The ferromagnetic behavior of the amorphous state may be explained by positive double-exchange interactions of Mn3+ and Mn4+ ions.Keywords
This publication has 8 references indexed in Scilit:
- Magnetic compounds with perovskite structure IV Conducting and non-conducting compoundsPublished by Elsevier ,2004
- Magnetic properties of Fe2O3-CaO-B2O3glassIEEE Transactions on Magnetics, 1987
- Structure and magnetic properties of Bi-Zn-Fe-O amorphous filmsIEEE Transactions on Magnetics, 1986
- Transparent ferromagnetic films coexisting with ferroelectricity of the BiFeO3-PbTiO3 system fabricated by reactive RF-sputtering.Journal of the Magnetics Society of Japan, 1986
- Noncrystalline ferromagnetic iron-gallium oxideJournal of Applied Physics, 1982
- Magnetic Properties of Amorphous Spinel FerritesJapanese Journal of Applied Physics, 1982
- Amorphous magnetic orderJournal of Applied Physics, 1978
- Interaction between the-Shells in the Transition Metals. II. Ferromagnetic Compounds of Manganese with Perovskite StructurePhysical Review B, 1951