Frequency dependence of the spin glass freezing temperatures in icosahedral R-Mg-Zn (R = rare earth) quasicrystals

TitleFrequency dependence of the spin glass freezing temperatures in icosahedral R-Mg-Zn (R = rare earth) quasicrystals
Publication TypeJournal Article
Year of Publication2012
AuthorsBud'ko SL, Canfield PC
Journal TitlePhilosophical Magazine
Volume92
Pages4492-4497
Date Published12/11
Type of ArticleArticle
ISBN Number1478-6435
Accession NumberWOS:000311944300011
KeywordsDY, er, freezing temperature, frequency dependence, gd, growth, HO, magnetic-properties, quasicrystals, single-crystals, Spin glass, tb
Abstract

We present ac susceptibility measurements with the frequency spanning three orders of magnitude on single grain, icosahedral RMgZn (R = rare earth) quasicrystals. The freezing temperature in Gd-based, Heisenberg spin glasses in this family increases by similar to 2% with a frequency increase from 10?Hz to 10?kHz, whereas the freezing temperature in the non-Heisenberg members of the family is significantly more responsive to the frequency change (by 1622%), suggesting that an additional magnetic anisotropy distribution in the non-Heisenberg spin glasses causes changes in the low frequency magnetic dynamics.

URL<Go to ISI>://WOS:000311944300011
DOI10.1080/14786435.2012.714084