High-field magnetoelasticity of Tm2Co17 and comparison with Er2Co17

Автор(и)

  • A.V. Andreev Institute of Physics, Academy of Sciences, Na Slovance 2, Prague 182 21, Czech Republic
  • A.A. Zvyagin B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Nauky Ave., Kharkiv 61103, Ukraine
  • Y. Skourski Dresden High Magnetic Field Laboratory, Helmholtz-Zentrum Dresden-Rossendorf, Dresden D-01314, Germany
  • S. Yasin Dresden High Magnetic Field Laboratory, Helmholtz-Zentrum Dresden-Rossendorf, Dresden D-01314, Germany
  • S. Zherlitsyn Dresden High Magnetic Field Laboratory, Helmholtz-Zentrum Dresden-Rossendorf, Dresden D-01314, Germany

DOI:

https://doi.org/10.1063/1.5010307

Ключові слова:

intermetallic compounds, magnetoelasticity, magnetostriction.

Анотація

Acoustic properties (ultrasound velocity and attenuation) and magnetostriction were measured in pulsed fields up to 60 T applied along the c axis of Tm2Co17 single crystal. Similar to Er2Co17, the transition in Tm2Co17 is accompanied by clear anomalies in the sound velocity. The observed 0.3% jump of the sound velocity at the transition is negative in Tm2Co17, whereas it is positive in Er2Co17. The magnetostriction at the transition also differs very much from that in Er2Co17. In Tm2Co17, the transition is accompanied by a smooth minimum of 0.15·10–4 in longitudinal magnetostriction whereas in Er2Co17 by a very sharp expansion of much largermagnitude (1.2·10–4). In the transverse mode, the effect in Tm2Co17 looks as very broad minimum of low amplitude (< 0.1·10–4) whereas in Er2Co17 as very sharp and large shrinkage (2.6·10–4). Thus, both themagnetoacoustics and magnetostriction are rather different in Tm2Co17 and Er2Co17. This supports different nature of the field-induced transitions in these compounds.

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Опубліковано

2017-09-19

Як цитувати

(1)
Andreev, A.; Zvyagin, A.; Skourski, Y.; Yasin, S.; Zherlitsyn, S. High-Field Magnetoelasticity of Tm2Co17 and Comparison With Er2Co17. Fiz. Nizk. Temp. 2017, 43, 1575-1580.

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