Collective and single-ion magnetic excitations in Ho3Fe5O12 at submillimeter wavelengths

Authors
Mukhin, AA Travkin, VD Lebedev, SP Ivanov, VY
Citation
Aa. Mukhin et al., Collective and single-ion magnetic excitations in Ho3Fe5O12 at submillimeter wavelengths, PHYSICA B, 284, 2000, pp. 1465-1466
Citations number
5
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
284
Year of publication
2000
Part
2
Pages
1465 - 1466
Database
ISI
SICI code
0921-4526(200007)284:<1465:CASMEI>2.0.ZU;2-T
Abstract
In submillimeter transmission spectra of Ho3F5O12 resonance modes originati ng from single-ion electron transitions inside of Ho3+ ions and collective excitations (ferromagnetic (FMR) resonance) were observed. Temperature depe ndencies of their resonance frequencies, line widths and mode contributions to a static magnetic permeability have been obtained. A significant increa se of the FMR frequency at low temperatures being comparable with some He-m odes results in a strong coupling of oscillations in the Ho- and Fe-subsyst ems. (C) 2000 Elsevier Science B.V. All rights reserved.