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The Néel temperature of Mn100−xRhx alloys in ordered and disordered states
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The concentration dependence of the room-temperature lattice constant and the Néel temperature of Mn100−xRhx (15⩽x⩽30) disordered and ordered alloys was investigated in order to clarify the difference in the antiferromagnetic properties. The room-temperature lattice constant increases with increasing x and the difference between the disordered and ordered alloys was hardly observed. The Néel temperature increases with increasing x in both the disordered and ordered states. This behavior is not explained by the variation of the strength of the exchange interaction as a function of the Mn–Mn distance but by the number of 3d electrons in the Mn site. The Néel temperature in the ordered state is 130–160 K higher than that in the disordered state, indicating that the exchange interaction is enhanced by ordering.
AIP Publishing
Title: The Néel temperature of Mn100−xRhx alloys in ordered and disordered states
Description:
The concentration dependence of the room-temperature lattice constant and the Néel temperature of Mn100−xRhx (15⩽x⩽30) disordered and ordered alloys was investigated in order to clarify the difference in the antiferromagnetic properties.
The room-temperature lattice constant increases with increasing x and the difference between the disordered and ordered alloys was hardly observed.
The Néel temperature increases with increasing x in both the disordered and ordered states.
This behavior is not explained by the variation of the strength of the exchange interaction as a function of the Mn–Mn distance but by the number of 3d electrons in the Mn site.
The Néel temperature in the ordered state is 130–160 K higher than that in the disordered state, indicating that the exchange interaction is enhanced by ordering.
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