Title :
Dynamical spin reorientation transition in orthoferrite NdFeO3 studied with terahertz time-domain spectroscopy
Author :
Junjie Jiang ; Zuanming Jin ; Gaibei Song ; Xian Lin ; Guohong Ma ; Shixun Cao
Author_Institution :
Dept. of Phys., Shanghai Univ., Shanghai, China
Abstract :
Temperature dependence of FID signal emitted by AFM in NdFeO3 is investigated by employing THz time-domain spectroscopy. Our results reveal that Γ4→Γ24 phase transition occurs around T1=170 K, and both two phases have the same AFM resonant frequency of 0.485 THz. The frequency softening is observed for Γ24→Γ2 occurring around T2=110 K.
Keywords :
ferrites; magnetic transitions; neodymium compounds; spin dynamics; terahertz wave spectra; time-domain analysis; Γ24→Γ2 phase transition; Γ4→Γ24 phase transition; AFM resonant frequency; FID signal; NdFeO3; atomic force microscopy; dynamical spin reorientation transition; frequency 0.485 THz; frequency softening; orthoferrite NdFeO3; temperature 110 K; temperature 170 K; temperature dependence; terahertz time-domain spectroscopy; Crystals; Magnetic fields; Magnetic resonance; Spectroscopy; Temperature measurement; Time-domain analysis;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2013 38th International Conference on
Conference_Location :
Mainz
DOI :
10.1109/IRMMW-THz.2013.6665899
