Thermal expansion and spontaneous magnetostriction of RCo5 intermetallic compounds
作者:A.V. Andreev、S.M. Zadvorkin
DOI:10.1016/0921-4526(91)90011-3
日期:1991.7
Thermal expansion of RCo5 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 reaches 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 YCo5, Y being the nonmagnetic analogue of R.