Interplay between orbital, charge and magnetic orderings in R(1-x)A(x)MnO(3) (x=0, 0.5) / Gontchar LE,Nikiforov AE,Popov SE // JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. - 2001. - V. 223, l. 2. - P. 175-191.

ISSN/EISSN:

0304-8853 / нет данных

Type:

Article

Abstract:

This work is devoted to the description of the orbital and magnetic structures of pure and charge-ordered manganites, caused by crystal and charge structures and the Jahn-Teller effect. The model under consideration is based on the orbital dependency of the magnetic interactions in Jahn-Teller crystal. The orbital structure is considered dependent upon the Jahn-Teller distortions of the coordination of the Mn3+ ions and upon the crystal field. It is shown that exchange interactions forming the magnetic structure of the charge-ordered manganite could be described in the superexchange approximation because of localization of the charge carriers. For pure manganite and for charge-ordered phase, the exchange parameters dependencies and the single-ion anisotropy dependency, upon the angle of orbital states mixing, are drawn. Therefore, it is shown that the orbital structure of the charge-ordered phase is formed mainly by cooperative Jahn-Teller distortions and, taking into account the charge superstructure, causes the non-trivial magnetic structure. (C) 2001 Elsevier Science B.V. All rights reserved.

Author keywords:

manganites; Jahn-Teller effect; charge ordering; orbital ordering; magnetic structure; superexchange; spin waves STRUCTURAL TRANSITIONS; NEUTRON-DIFFRACTION; X-RAY; LAMNO3; PHASE; TEMPERATURE; MANGANITES; SCATTERING; DISTORTION; ORIGIN

DOI:

10.1016/S0304-8853(00)00597-7

Web of Science ID:

ISI:000166775000011

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JAN
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
Keywords-Plus	STRUCTURAL TRANSITIONS; NEUTRON-DIFFRACTION; X-RAY; LAMNO3; PHASE; TEMPERATURE; MANGANITES; SCATTERING; DISTORTION; ORIGIN
Research-Areas	Materials Science; Physics
Web-of-Science-Categories	Materials Science, Multidisciplinary; Physics, Condensed Matter
ResearcherID-Numbers	Nikiforov, Anatoliy/L-4436-2016 Gonchar, Liudmila/L-6878-2016
ORCID-Numbers	Gonchar, Liudmila/0000-0002-5872-3565
Number-of-Cited-References	48
Usage-Count-Since-2013	7
Journal-ISO	J. Magn. Magn. Mater.
Doc-Delivery-Number	398UN