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BEHAVIOR OF THE TRANSVERSE SPIN COMPONENT IN THE SHORT-RANGE ISING SPIN-GLASS FE0.5MN0.5TIO3

被引：26
作者：
ITO, A
TORIKAI, E
MORIMOTO, S
ARUGA, H
KIKUCHI, M
SYONO, Y
TAKEI, H
机构：
[1] TOHOKU UNIV,INST MAT RES,SENDAI,MIYAGI 980,JAPAN
[2] UNIV TOKYO,INST SCI & TECHNOL,MINATO KU,TOKYO 106,JAPAN
[3] YAMANASHI UNIV,FAC TECHNOL,KOFU,YAMANASHI 400,JAPAN
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1990年 / 59卷 / 03期
关键词：
dc-magnetization; Ising spin-glass; Mössbauer effect; neutron scattering; transverse spin component;
D O I：
10.1143/JPSJ.59.829
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The spin-glass Fe0.5Mn0.5TiO3 (TSG=21.5K) has been studied by low-field demagnetization, neutron scattering and Mössbauer measurements. The results obtained by the magnetization and neutron scattering measurements indicate that only the longitudinal spin component freezes below TSG. This fact shows that Fe0.5Mn0.5TiO3 behaves as a typical Ising spin-glass in both of the measurements. However, the hyperfine fields Hhf at Fe nuclei observed by the Mössbauer measurement point to directions other than the hexagonal c-axis in the spin-glass state. This indicates that the transverse spin component contributes to Hhf as does the longitudinal one. Combining the results obtained by the three methods, it is concluded that the transverse spin components fluctuate rather incoherently with one another with characteristic times longer than our Mössbauer time scale of ~ 10-7 s. © 1990, THE PHYSICAL SOCIETY OF JAPAN. All rights reserved.
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页码：829 / 832
页数：4
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