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SM ISO690:2012 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 |
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Conferința "Materials Science and Condensed Matter Physics" 7, Chișinău, Moldova, 16-19 septembrie 2014 | |
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Pag. 93-93 | |
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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. |
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