Thermal expansion and spontaneous magnetostriction of RCo5 intermetallic compounds

✍ Scribed by A.V. Andreev; S.M. Zadvorkin

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 645 KB
• Volume: 172
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(91)90011-3

✦ Synopsis

Thermal expansion of RCo 5 compounds (R = Pr, Nd, Sm, Gd, Tb, Dy, Ho) is investigated by X-ray diffractometry on single crystalline samples in the temperature range 5-1300 K. All compounds undergo large spontaneous magnetostrictive deformations, the volume effect re~tches 3.2 x 10 -2 at 5 K in HoCo5 5. The contributions to the volume effect from Co-Co and R-Co exchange interactions are determined by comparison with YCo 5, Y being the nonmagnetic analogue of R.