DocumentCode
766395
Title
Electron Spin Resonance (ESR) and Microwave Absorption Studies in TbMnO 
Multiferroic Compound
Author
Duque, J.G.S. ; Pagliuso, P.G. ; Rettori, C. ; Bufaiçal, L. ; Moreno, N.O. ; Urbano, R.R. ; Kimura, T.
Author_Institution
Inst. de Fisica, Univ. Estadual de Campinas
Volume
42
Issue
10
fYear
2006
Firstpage
3084
Lastpage
3086
Abstract
We report temperature dependent X-Band (f~9.5 GHz) Electron Spin Resonance (ESR) and microwave absorption measurements in a single crystal of TbMnO3. A single Lorentzian ESR line with an isotropic g-value g~1.96 was observed for Tges120 K up to 600 K. The ESR signal is attributed to the Mn3+ ions in a insulator environment. The temperature dependence of the ESR linewidth is investigated for the external field applied along the three crystallographic axes. For all direction the ESR linewidth show a strong broadening as the temperature decreases due to the presence of short range magnetic correlations. The microwave absorption around the ferroelectric transition Tlock~27 K was investigated using a special cavity with a TE103 mode where the sample sits at the maximum microwave electric-field
Keywords
electromagnetic wave absorption; ferroelectric transitions; magnetic transitions; manganese alloys; multiferroics; paramagnetic resonance; terbium alloys; 120 to 600 K; ESR linewidth; ESR signal; Lorentzian ESR line; TbMnO3; electron spin resonance; ferroelectric transition; magnetic correlations; microwave absorption measurements; microwave electric field; multiferroic compound; single crystal; Electromagnetic heating; Electromagnetic wave absorption; Ferroelectric materials; Magnetic materials; Magnetic properties; Microwave measurements; Paramagnetic resonance; Tellurium; Temperature dependence; Temperature distribution; Antiferromagnetic order; electron spin resonance; multiferroic compounds;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.2006.879719
Filename
1704534
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