Nonlinear magnetization process of single-crystalline FeSi

Authors
Koyama, K Goto, T Kanomata, T Note, R Takahashi, Y
Citation
K. Koyama et al., Nonlinear magnetization process of single-crystalline FeSi, J PHYS JPN, 69(1), 2000, pp. 219-224
Citations number
20
Categorie Soggetti
Physics
Journal title
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
ISSN journal
00319015 → ACNP
Volume
69
Issue
1
Year of publication
2000
Pages
219 - 224
Database
ISI
SICI code
0031-9015(200001)69:1<219:NMPOSF>2.0.ZU;2-E
Abstract
The magnetization process of FeSi has been measured with a high-quality sin gle-crystalline sample using a SQUID magnetometer in the temperature range from 5 K to 600 K. From the Arrott plots of the magnetization data, the fou rth-order coefficient of the free energy is found to have a large positive value at low temperature and significantly decreases by the order of 10(5) with increasing temperature. This result can be explained with a new spin f luctuation theory of FeSi proposed by Takahashi.