Acoustic properties of dilute PdFe and PtFe spin glasses

P. Esquinazi*, R. König, B. Neppert, F. Pobell

*Corresponding author for this work


We have measured the sound velocity and sound attenuation of the dilute spin glasses Pd + 15 ppm Fe, Pd + 150 ppm Fe, and Pt + 55 ppm Fe at ̃ 1 kHz and temperatures from 0.2 mK to 200 mK, 6 mK to 100 mK, and 50 mK to 200 mK, respectively. Both acoustic properties show anomalies near their spin glass freezing temperatures. For the most dilute sample Pd + 15 ppm Fe, we measured an attenuation peak at 1 mK accompanied by a maximum in the sound velocity. Both anomalies are suppressed by a magnetic field of only 0.1 mT.

Original languageEnglish
JournalPhysica B: Condensed Matter
Issue number1-4
Pages (from-to)284-286
Number of pages3
Publication statusPublished - 01.04.1996


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