Antiferromagnetic-resonance spectrum in charge-ordered R0.5Ca0.5MnO3 manganites (R = La, Pr, Tb): The effect of orbital and charge structures / Gonchar' LE,Nikiforov AE // JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS. - 2003. - V. 96, l. 3. - P. 510-522.

ISSN/EISSN:

1063-7761 / нет данных

Type:

Article

Abstract:

A theoretical study is made into the effect of the crystal, orbital, and charge structures on the magnetic structure and spin-wave spectra and on the antiferromagnetic resonance (AFMR) for R0.5Ca0.5MnO3 crystals of monoclinic structure. The model assumes fixed crystal, charge, and orbital structures and enables one to determine the orbitally dependent exchange interaction and single-ion anisotropy for R = La, Pr, Tb. A 16-sublattice weakly noncollinear magnetic CE-structure without a ferromagnetic component is obtained. The behavior of magnetic structure in an external magnetic field is simulated, and the values of fields of spin-flop-transition for different Rs are obtained. The law of spin-wave dispersion and the field dependence of the antiferromagnetic-resonance spectrum are calculated. (C) 2003 MAIK ``Nauka/Interperiodica{''}.

Author keywords:

JAHN-TELLER PHONONS; DOPED MANGANITES; MANGANESE OXIDES; MAGNETIC-FIELD; PHASE-DIAGRAM; CRUCIAL ROLE; A-TYPE; LAMNO3; TRANSITIONS; STATE

DOI:

10.1134/1.1567425

Web of Science ID:

ISI:000182157900015

Соавторы в МНС:

Другие поля

Поле	Значение
Publisher	AMER INST PHYSICS
Address	CIRCULATION \& FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA
Language	English
Keywords-Plus	JAHN-TELLER PHONONS; DOPED MANGANITES; MANGANESE OXIDES; MAGNETIC-FIELD; PHASE-DIAGRAM; CRUCIAL ROLE; A-TYPE; LAMNO3; TRANSITIONS; STATE
Research-Areas	Physics
Web-of-Science-Categories	Physics, Multidisciplinary
ResearcherID-Numbers	Nikiforov, Anatoliy/L-4436-2016 Gonchar, Liudmila/L-6878-2016
ORCID-Numbers	Gonchar, Liudmila/0000-0002-5872-3565
Number-of-Cited-References	51
Usage-Count-Since-2013	1
Journal-ISO	J. Exp. Theor. Phys.
Doc-Delivery-Number	666CK