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Destruction of manganite La 0.825 Ba 0.175 MnO 3 ferromagnetism caused by structural disordering
Author(s) -
Chukalkin Yurii,
Teplykh Alexander,
Goshchitskii Boris
Publication year - 2007
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.200600014
Subject(s) - manganite , ferromagnetism , condensed matter physics , neutron diffraction , spin glass , materials science , colossal magnetoresistance , magnetoresistance , chemistry , crystallography , physics , crystal structure , magnetic field , quantum mechanics
The methods of neutron diffraction, X‐ray and magnetic measurements were used to study the structural and magnetic states of disordered samples of manganite La 0.825 Ba 0.175 MnO 3 . A disordered state was attained by irradiation with fast neutrons. It was established that the ferromagnet → spin glass‐like magnetic transformation takes place at a substitution concentration of ∼6%. A magnetic state diagram of structurally disordered manganite was constructed. The magnetic state transformations are explained by the effect of localization of e g ‐electrons responsible for kinetic ferromagnetic exchange. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)