High-field magnetoelasticity of Tm2Co17 and comparison with Er2Co17

0487033 - FZÚ 2018 RIV RU eng J - Journal Article
Andreev, Alexander V. - Zvyagin, A.A. - Skourski, Y. - Yasin, S. - Zherlitsyn, S.
High-field magnetoelasticity of Tm2Co17 and comparison with Er2Co17.
Low Temperature Physics. Roč. 43, č. 11 (2017), s. 1254-1259. ISSN 1063-777X. E-ISSN 1090-6517
R&D Projects: GA ČR GA16-03593S
Institutional support: RVO:68378271
Keywords : intermetallic compounds * magnetoelasticity * magnetostriction
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 0.860, year: 2017

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 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 Er analogue. In Tm compound, the transition is accompanied by a smooth minimum of 0.15x10-4 in longitudinal magnetostriction whereas in Er compound by a very sharp expansion of much larger magnitude (1.2x10-4). In the transverse mode, the effect in Tm compound looks as very broad minimum of low amplitude whereas in Er analogue as very sharp and large shrinkage. Thus, magnetoacoustics and magnetostriction support different nature of the field-induced transitions in Tm and Er compounds.
Permanent Link: http://hdl.handle.net/11104/0281721