Structure and magnetic properties of mechanically alloyed SmCo{sub 7} compound

Journal Article · Sun Sep 01 04:00:00 EDT 1996 · IEEE Transactions on Magnetics

DOI:https://doi.org/10.1109/20.538875· OSTI ID:400766

Yang, J; Mao, O; Altounian, Z ^[1]

---

1. McGill Univ., Montreal, Quebec (Canada). Center for the Physics of Materials

The relationship between phase transformation and magnetic properties of mechanically alloyed (MA) SmCo{sub 7} alloys at different annealing temperatures has been studied. The MA alloy is a mixture of an amorphous phase and a TbCu{sub 7}-type phase, and has low coercivity. Upon annealing, the coercivity initially increases with the amount of SmCo{sub 7} phase. Maximum coercivity of 16 kOe has been obtained on single phase TbCu{sub 7}-type SmCo{sub 7} compound by annealing at 650 C. At higher annealing temperature, coercivity first decreases with the appearance of CaCu{sub 5}-type SmCo{sub 5} phase and still further with the formation of Th{sub 2}Zn{sub 17}-type Sm{sub 2}Co{sub 17} phase at 800 C.

• OSTI ID: 400766
• Report Number(s): CONF-960425--
• Journal Information: IEEE Transactions on Magnetics, Journal Name: IEEE Transactions on Magnetics Journal Issue: 5Pt2 Vol. 32; ISSN IEMGAQ; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COBALT BASE ALLOYS
COERCIVE FORCE
CRYSTAL-PHASE TRANSFORMATIONS
EXPERIMENTAL DATA
MAGNETIC PROPERTIES
MICROSTRUCTURE
SAMARIUM ALLOYS