Abstract
The field dependence of the magnetization of a ferromagnetic Heusler alloy Co 2VGa has been measured close to the Curie temperature of 358 K up to an applied field of 50 kOe. Results for samples with different Curie temperatures of 351 K are also reported. The critical exponent δ has been determined to be 4.15 (0.05) for both samples. The value is different from either 5 predicted by the spin fluctuation theory by Takahashi or 3 derived by a conventional molecular field theory. Possible origins for the discrepancy from the theories are discussed.
Original language | English |
---|---|
Pages (from-to) | 679-681 |
Number of pages | 3 |
Journal | Journal of Superconductivity and Novel Magnetism |
Volume | 24 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 2011 Jan |
Keywords
- Co VGa
- Curie temperature
- Ferromagnet
- Heusler alloy
- Magnetization process
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics