Электронный каталог

Статья

Tran, T.A.
Anomalous Magnetic and Electrical Properties of Disordered Double Perovskite Alloy LaCaMnFeO&sub(6) / T.A.Tran, A.V.Rutkauskas, S.E.Kichanov, A.S.Abiyev, [a.o.] // Materials Research Express [Electronic resource]. – 2024. – Vol. 11, No. 7. – P. 076101. – URL: https://doi.org/10.1088/2053-1591/ad5f07. – Bibliogr.: 43.

Double perovskite alloys are of significant interest owing to their intriguing magnetic properties and potential practical applications. In this study, we provided a detailed report on the structural, electrical and magnetic features of the double perovskite LaCaMnFeO&sub(6), prepared via the conventional solid-state reaction technique. Neutron diffraction analysis showed that the sample is single-phase adopting the Pnma orthorhombic structure with random distribution of La*3*+/Ca*2*+ and Mn*4*+/Fe*3*+ ions on A- and B-sites, respectively. A long-range G-type antiferromagnetic order was formed below T&sub(N) = 250 K. Magnetic measurements unveiled a cluster glassy behavior at low temperatures with a complex distribution of cluster magnetic anisotropy energy. Ferromagnetic clusters consisting of two Mn*4*+ and one Fe*3*+ were found to exist in the paramagnetic phase. The complex magnetic properties of LaCaMnFeO&sub(6) are attributed to the cation disorder effect combined with the competition between magnetic interactions. Unusual electrical behavior with a large positive magnetoresistive effect was observed and correlated to magnetic phase transitions.



ОИЯИ = ОИЯИ (JINR)2024
Спец.(статьи,препринты) = С 342 г1 - Замедление и диффузия нейтронов. Дифракция
Спец.(статьи,препринты) = С 36 - Физика твердого тела$
Бюллетени = 10/025