Journal article
Neutron diffraction study of the magnetic long-range order in Tb
Like other heavy rare-earth metals, Tb exhibits a magnetic phase with a spiral structure. This appears within the temperature region from 216 to 226deg K between the ferromagnetic phase and the paramagnetic phase. The transition between ferromagnetic and spiral structure is of first order and implies no change in the long-range order.
In the close vicinity of the Neacuteel temperature TN = 226deg K the spiral magnetic long-range order varies as (TN-T)0.25plusmn 0.01, whereas the total order within a wider temperature range roughly follows (TN-T)1/3. The turn angle per layer varies from 16.5deg at 216deg K to 20.7deg at 226deg K. The temperature variation of the transverse magnetostriction has also been measured and was found to vary approximately in proportion to the square of the magnetic long-range order.
Language: | English |
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Year: | 1967 |
Pages: | 315-320 |
ISSN: | 15366065 and 0031899x |
Types: | Journal article |
DOI: | 10.1103/PhysRev.162.315 |