Crystal structure and magnetic properties of R5Sn4 alloys, where R is Tb, Dy, Ho, and Er

TitleCrystal structure and magnetic properties of R5Sn4 alloys, where R is Tb, Dy, Ho, and Er
Publication TypeJournal Article
Year of Publication2011
AuthorsZhong XC, Zou M, Zhang H, Liu ZW, Zeng DC, Gschneidner KA, Pecharsky VK
Journal TitleJournal of Applied Physics
Volume109
Pages07a917
Date Published04/01
Type of ArticleProceedings Paper
ISBN Number0021-8979
Accession NumberISI:000289949000301
Abstract

Crystal structure and magnetic properties of R5Sn4 alloys with R = Tb, Dy, Ho, and Er have been studied. R5Sn4, R11Sn10, and R5Sn3 phases coexist in the annealed alloys and the content of 11:10 and 5:3 phases varies between 9 and 17 wt.%. The R5Sn4 major phase has Sm5Ge4-type orthorhombic structure with space group Pnma. Tb5Sn4 has a complex magnetic structure, spin re-orientation and ferrimagnetic-paramagnetic phase transitions occur at similar to 54 and similar to 84 K, respectively. For Dy5Sn4, Ho5Sn4, and Er5Sn4, the antiferromagnetic-paramagnetic phase transitions occur at about 22, 15, and 8 K, respectively. The magnetic entropy changes (-Delta S-M) of all alloys are negative at low temperature and changes to positive at higher temperatures, which could be attributed to the change of magnetic states. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3549562]

URL<Go to ISI>://000289949000301
DOI10.1063/1.3549562
Alternate JournalJ. Appl. Phys.