Structural and magnetic properties of morphotropic phase boundary involved Tb1-xGdxFe2 compounds
In the present paper, structural, magnetic and magnetostrictive properties of Tb1-xGdxFe2 (0 <= x <= 1.0) were studied. Synchrotron x-ray diffraction (XRD) results show the non-cubic symmetry of Tb1-xGdxFe2 at room temperature and composition-induced crystallographic phase transition from rhombohedral phase to tetragonal phase. The Gd concentration dependent lattice parameters, lattice distortion and change of easy magnetic direction were detected by synchrotron XRD. With the Gd concentration increases, Curie temperature Tc increases while room temperature magnetization and magnetostriction coefficient lambda(111) and the anisotropy of TbFe2 decrease. The decrease in spontaneous magnetostriction coefficient lambda(111) with increasing Gd substitution can be understood on the basis of the single-ion model; the corresponding decrease of magnetostriction for Tb1-xGdxFe2, and the large magnetostriction value occurs on the Tb-rich side, are ascribed to decrease of lambda(111)
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science - Office of Basic Energy Sciences - Scientific User Facilities Division; National Natural Science Foundation of China (NSFC)
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1324286
- Journal Information:
- Journal of Alloys and Compounds, Vol. 680, Issue C; ISSN 0925-8388
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
Similar Records
Morphotropic phase boundary and magnetoelastic behaviour in ferromagnetic Tb1-xGdxFe2 system
Morphotropic phase boundary and magnetoelastic behaviour in ferromagnetic Tb{sub 1−x}Gd{sub x}Fe{sub 2} system