Abstract
The magnetic and elastic properties of the Bi1-x CaxMnO3 manganites are studied. The phase transformations revealed are ferromagnet-spin glass (x≥0.15) and spin glass-charge-ordered antiferromagnet (x≥0.25). The ferromagnetic state is characterized by ordering of the Mn3+ d x 2-y orbitals. It is suggested that thespin glass state originates from local static Jahn-Teller distortions. The antiferromagnetic charge-ordered and the spin-glass disordered phases coexist in samples with 0.25<x<0.32, which may be due to the charge order-disorder phase transformation being martensitic in character. The magnetic phase diagram is constructed.
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Translated from Fizika Tverdogo Tela, Vol. 44, No. 12, 2002, pp. 2164–2168.
Original Russian Text Copyright © 2002 by Troyanchuk, Mantytskaya, Chobot.
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Troyanchuk, I.O., Mantytskaya, O.S. & Chobot, A.N. Magnetic phase diagram of the Bi1-x CaxMnO3 manganites. Phys. Solid State 44, 2266–2270 (2002). https://doi.org/10.1134/1.1529922
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DOI: https://doi.org/10.1134/1.1529922