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Title: Spin reorientation transition in Sm{sub 0.5}Tb{sub 0.5}FeO{sub 3} orthoferrite single crystal

Single crystal of Sm{sub 0.5}Tb{sub 0.5}FeO{sub 3} was grown by an optical floating zone method. The spin reorientation transition behavior (Γ{sub 2} → Γ{sub 24} → Γ{sub 4}) is observed in the temperature range from 150 to 250 K. The dynamics of spin reorientation transition is studied by terahertz time-domain spectroscopy (THz-TDS). FM mode was only discovered when temperature is below 55 K. And the FM mode resonant frequency increases from 0.216 THz to 0.268 THz with temperature deceasing from 55 K to 39 K. The AFM mode resonant frequency is fixed at 0.542 THz except in the very low temperature range. Our results demonstrate that THz-TDS is an effective means to study the dynamical iron ions SRT in RFeO{sub 3}.
Authors:
;  [1] ;  [2] ; ; ; ; ;  [3] ; ;  [1]
  1. Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai 200050 (China)
  2. (China)
  3. Department of Physics, Shanghai University, Shanghai 200444 (China)
Publication Date:
OSTI Identifier:
22492403
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 6; Journal Issue: 1; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ATOMIC FORCE MICROSCOPY; CRYSTAL GROWTH; FERRITES; IRON IONS; MONOCRYSTALS; SAMARIUM COMPOUNDS; SPIN; TEMPERATURE DEPENDENCE; TERBIUM COMPOUNDS; ZONES