H. Ohsumi et al., CRYSTAL-LATTICE CHANGES INDUCED BY MAGNETIC-FIELD AND HELIFAN STRUCTURE IN HOLMIUM METAL, Journal of the Physical Society of Japan, 66(7), 1997, pp. 1896-1899
An X-ray diffraction study has been made on holmium metal in a magneti
c field at several temperatures. In most cases, the c-lattice paramete
r has been observed to change discontinuously with increasing magnetic
field, corresponding to the appearance of various magnetic structures
. The result or numerical calculations hy a self-consistent mean field
method suggests that the effect of the helifan structure on the cryst
al lattice has been observed in a narrow range of magnetic field.