Abstract
The effect of La impurities on the low-field (A phase) and high-field (B phase) ordered states in PrFe4P12 has been studied using dc magnetization measurements on a series of Pr1-xLa xFe4P12 (x = 0, 0.01, 0.05, and 0.15). It is found that the long-range A phase order evolves to a short-range one at a very small La concentration between x = 0.01 and 0.05. We also find clear evidence for the existence of ferromagnetism in the sample with x ≥ 0:05. Remarkably, the ferromagnetic ordering temperature TC increases from 1.05 K for x = 0.05 to 1.45 K for x = 0.15, although the Weiss temperature decreases with increasing x. These observations indicate the competition between the A phase and ferromagnetic state, and the role of nesting on the A phase transition is emphasized.
Original language | English |
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Article number | 083702 |
Journal | Journal of the Physical Society of Japan |
Volume | 76 |
Issue number | 8 |
DOIs | |
State | Published - 2007/08 |
Keywords
- Fermi surface nesting
- Filled skutterudite
- Impurity effect
- Magnetization
- Phase diagram
- PrFeP
ASJC Scopus subject areas
- General Physics and Astronomy