Abstract
Crystalline structures and magnetic properties of the FeRh1−xPdx system were investigated. Substitution of Pd for Rh stabilized body-centered tetragonal (bct) structure of the ordered CuAu-type with increasing axial ratio c/a from 1.18 to 1.36. The bct alloys in the range x=0.530∼0.61 exhibited a first-order phase transition from antiferromagnetic to ferromagnetic state, while the bct alloys with x<0.530 exhibited a first-order phase transition from antiferromagnetic to Curie paramagnetic state. Both the axial ratio and the volume increased abruptly at the transitions. A new ferromagnetic phase with orthorhombic structure with the space group Cmmm was found in the bct alloys with x=0.525∼0.61 below room temperature. This ferromagnetic phase possesses a larger magnetic moment than that of the bct phase. Reduction of the crystalline symmetry may have enhanced the magnetic moment.
Original language | English |
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Pages (from-to) | 4906-4913 |
Number of pages | 8 |
Journal | journal of the physical society of japan |
Volume | 64 |
Issue number | 12 |
DOIs | |
Publication status | Published - 1995 Jan 1 |
Externally published | Yes |
Keywords
- FeRhPd alloys
- body-centered tetragonal structure
- magneto-volume effect
- orthorhombic structure
- tetragonal elongation effect
ASJC Scopus subject areas
- Physics and Astronomy(all)