Ultrasound study of orbital order in FeCr2S4 at high magnetic fields

Felea Viorel; Yasin Shadi; Gunther A.; Deisenhofer Joachim; Krug Von Nidda Hans Albrecht; Scheidt Ernst Wilhelm; Quach Dat V.; Groza Joanna R.; Zherlitsyn S.; Tsurkan Vladimir; Lemmens Peter; Wosnitza Joachim; Loidl Alois

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2021-06-24 09:16

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FELEA, Viorel, YASIN, Shadi, GUNTHER, A., DEISENHOFER, Joachim, KRUG VON NIDDA, Hans Albrecht, SCHEIDT, Ernst Wilhelm, QUACH, Dat V., GROZA, Joanna R., ZHERLITSYN, S., TSURKAN, Vladimir, LEMMENS, Peter, WOSNITZA, Joachim, LOIDL, Alois. Ultrasound study of orbital order in FeCr2S4 at high magnetic fields. In: Materials Science and Condensed Matter Physics, Ed. 7, 16-19 septembrie 2014, Chișinău. Chișinău, Republica Moldova: Institutul de Fizică Aplicată, 2014, Editia 7, p. 93.

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Materials Science and Condensed Matter Physics
Editia 7, 2014

Conferința "Materials Science and Condensed Matter Physics"
7, Chișinău, Moldova, 16-19 septembrie 2014

Ultrasound study of orbital order in FeCr2S4 at high magnetic fields

Pag. 93-93

Felea Viorel¹, Yasin Shadi², Gunther A.³, Deisenhofer Joachim³, Krug Von Nidda Hans Albrecht³, Scheidt Ernst Wilhelm³, Quach Dat V.⁴, Groza Joanna R.⁴, Zherlitsyn S.², Tsurkan Vladimir¹³, Lemmens Peter⁵, Wosnitza Joachim², Loidl Alois³

¹ Institute of Applied Physics, Academy of Sciences of Moldova,
² Helmholtz-Zentrum Dresden-Rossendorf,
³ University of Augsburg,
⁴ University of California at Davis,
⁵ Technical University of Braunschweig

Disponibil în IBN: 27 februarie 2019

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We repo1i on ultrasound studies of FeCr2S4, were prepared by spark plasma sintering (SPS) [1], in static and pulsed magnetic fields exhibiting an orbital-order transition at 9 K. A longitudinal acoustic mode exhibits distinct features in the phase space of temperature and magnetic field due to magnetic and strnctural transfo1mations. Pulsed-field measurements show significant differences in the sound velocity below and above the orbital-ordering transition as well as the spin-reorientation transition at 60 K. Our results indicate a reduction of the magnetoc1ystalline anisotropy on entering the orbitally ordered phase due to modifications of the competing Jahn-Teller and spin-orbit couplings by the magnetic field.