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Title: Terahertz probes of magnetic field induced spin reorientation in YFeO{sub 3} single crystal

Using the terahertz time-domain spectroscopy, we demonstrate the spin reorientation of a canted antiferromagnetic YFeO{sub 3} single crystal, by evaluating the temperature and magnetic field dependence of resonant frequency and amplitude for the quasi-ferromagnetic (FM) and quasi-antiferromagnetic modes (AFM), a deeper insight into the dynamics of spin reorientation in rare-earth orthoferrites is established. Due to the absence of 4f-electrons in Y ion, the spin reorientation of Fe sublattices can only be induced by the applied magnetic field, rather than temperature. In agreement with the theoretical predication, the frequency of FM mode decreases with magnetic field. In addition, an obvious step of spin reorientation phase transition occurs with a relatively large applied magnetic field of 4 T. By comparison with the family members of RFeO{sub 3} (R = Y{sup 3+} or rare-earth ions), our results suggest that the chosen of R would tailor the dynamical rotation properties of Fe ions, leading to the designable spin switching in the orthoferrite antiferromagnetic systems.
Authors:
; ;  [1] ;  [1] ;  [2] ; ; ;  [3] ;  [1] ;  [4]
  1. Department of Physics, Shanghai University, Shanghai 200444 (China)
  2. (Germany)
  3. Center for Terahertz Waves and College of Precision Instrument and Optoelectronics Engineering, Key Laboratory of Optoelectronics Information and Technology (Ministry of Education), Tianjin University, Tianjin 300072 (China)
  4. (Australia)
Publication Date:
OSTI Identifier:
22412758
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 9; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANTIFERROELECTRIC MATERIALS; ANTIFERROMAGNETISM; ATOMIC FORCE MICROSCOPY; COMPARATIVE EVALUATIONS; CRYSTAL LATTICES; ELECTRONS; FERRITES; IRON IONS; MAGNETIC FIELDS; MONOCRYSTALS; PHASE TRANSFORMATIONS; PROBES; SPECTROSCOPY; SPIN; THZ RANGE; YTTRIUM COMPOUNDS; YTTRIUM IONS