TY - JOUR
T1 - Correlation between electron spin resonance and magnetization in Gd5 Ge4
AU - Ouyang, Z. W.
AU - Nojiri, H.
AU - Yoshii, S.
AU - Rao, G. H.
AU - Wang, Y. C.
PY - 2009/8/3
Y1 - 2009/8/3
N2 - Electron spin resonance (ESR) across the field-induced antiferromagnetic (AFM) to ferromagnetic (FM) transition in Gd5 Ge4 has been studied. The AFM-FM transition can be characterized as an anomaly in the ESR spectrum. In the high-field FM state, a single strong ESR peak is observed while in the low-field AFM state, the ESR spectrum presents relatively weak double peaks. In the coexisting AFM and FM phases, the ESR spectrum is an asymmetrical double-peak structure due to a superposition of AFM and FM resonances. Thus, the ESR result is significantly correlated with magnetization. The g value for FM resonance is found to be close to g=1.992 for the free Gd3+ ion. The exchange interactions in the AFM state are discussed qualitatively.
AB - Electron spin resonance (ESR) across the field-induced antiferromagnetic (AFM) to ferromagnetic (FM) transition in Gd5 Ge4 has been studied. The AFM-FM transition can be characterized as an anomaly in the ESR spectrum. In the high-field FM state, a single strong ESR peak is observed while in the low-field AFM state, the ESR spectrum presents relatively weak double peaks. In the coexisting AFM and FM phases, the ESR spectrum is an asymmetrical double-peak structure due to a superposition of AFM and FM resonances. Thus, the ESR result is significantly correlated with magnetization. The g value for FM resonance is found to be close to g=1.992 for the free Gd3+ ion. The exchange interactions in the AFM state are discussed qualitatively.
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U2 - 10.1103/PhysRevB.80.054401
DO - 10.1103/PhysRevB.80.054401
M3 - Article
AN - SCOPUS:70249096595
VL - 80
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 0163-1829
IS - 5
M1 - 054401
ER -