https://doi.org/10.1140/epjb/e2003-00245-9
Magnetic and exchange studies in amorphous Co80-xHoxB20 alloys
1
Laboratoire de Physique Théorique et Appliquée (LPTA), Faculté des Sciences Dhar Mahraz, BP 1796, Fès Atlas, Morocco
2
Laboratoire de Physique de la Matière Condensée et de l'Environnement (LPMCE), E.N.S.
Fès-Bensouda, Morocco
3
Laboratoire de Physique des Matériaux et de Microélectronique, Université Hassan II,
Faculté des Sciences, BP 5366, Aïn Chock, Route d'El Jadida, km-8, Casablanca, Morocco
Corresponding authors: a sayouri1@caramail.com ssayouri@yahoo.com
Received:
25
October
2002
Revised:
7
June
2003
Published online:
9
September
2003
Amorphous Co80-xHoxB20 alloys were prepared by melt spinning technique and their magnetic properties have been studied. The magnetic compensation occurs at about x=8. Antiferromagnetic coupling between Co and Ho prevails and breaks at relatively high-fields. The mean field theory has been used to explain the temperature dependence of the magnetization. The exchange interactions between Co-Co and Co-Ho atom pairs have been evaluated.
PACS: 75.50.Kj – Amorphous and quasicrystalline magnetic materials / 75.30.Et – Exchange and superexchange interactions
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2003