Published February 15, 1997
| Version v1
Journal article
Theoretical study of phase stability in LaNi5-LaCo5 alloys
Creators
- 1. Brookhaven National Lab., Upton, NY (United States). Physics Dept.
- 2. Gunma University, Faculty of Engineering, Kiryu, Gunma 376 (Japan)
- 3. Institute for Materials Research, Tohoku University, 980-77, Sendai (Japan)
Description
The phase stability of LaNi5-LaCo5 alloys with the CaCu5 type crystal structure (P6/mmm) has been investigated from first principles. The alloy is computed to form a continuous solid solution. Ferromagnetism increases with Co concentration, in accordance with experimental observations. It is found that Co impurities in LaNi5 have a strong preference for the three-fold degenerate non-basal sites (Ni-II, 3g). This preference persists at high temperatures, as has been observed in actual alloys by neutron scattering. The softness in the c direction is shown to increase with increasing Co concentration in the alloy. (orig.)
Additional details
Publishing Information
- Journal Title
- Journal of Alloys and Compounds
- Journal Volume
- 248
- Journal Issue
- 1-2
- Journal Page Range
- p. 90-97.
- ISSN
- 0925-8388
- CODEN
- JALCEU
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Switzerland
- INIS RN
- 28060882
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BINDING ENERGY; COBALT ALLOYS; CRYSTAL STRUCTURE; FERROMAGNETIC MATERIALS; LANTHANUM ALLOYS; MAGNETIC MOMENTS; NICKEL ALLOYS; PHASE DIAGRAMS; PHASE STABILITY; REACTION KINETICS
- Descriptors DEC
- ALLOYS; DIAGRAMS; ENERGY; INFORMATION; KINETICS; MAGNETIC MATERIALS; MATERIALS; RARE EARTH ALLOYS; STABILITY; TRANSITION ELEMENT ALLOYS