Magnetic instabilities in Fe3C cementite particles observed with FeK-edge X-ray circular dichroism under pressure
PHYSICAL REVIEW LETTERS, cilt.94, sa.7, 2005 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 94 Sayı: 7
- Basım Tarihi: 2005
- Doi Numarası: 10.1103/physrevlett.94.075502
- Dergi Adı: PHYSICAL REVIEW LETTERS
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Ankara Üniversitesi Adresli: Hayır
Özet
The ferromagnetic interstitial iron compound Fe3C (cementite) is expected to have Invar properties, whereby a high-moment to low-moment transition should occur when the atomic volume is reduced below a critical value. We, therefore, examine the pressure dependence of the Fe K-edge x-ray magnetic circular dichroism in Fe3C at ambient temperature and pressures up to 20 GPa. We find clear evidence for a high-moment to low-moment transition around 10 GPa.