Magnetic and acoustic properties of CoCr2S4
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FELEA, Viorel; CONG, Phamthan; PRODAN, Lilian; GRITSENKO, Y.; WOSNITZA, Joachim; ZHERLITSYN, S.; TSURKAN, Vladimir. Magnetic and acoustic properties of CoCr2S4. In: Low Temperature Physics. 2017, nr. 11(43), pp. 1290-1293. ISSN 1063-777X.
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Low Temperature Physics
Numărul 11(43) / 2017 / ISSN 1063-777X

Magnetic and acoustic properties of CoCr2S4


DOI: 10.1063/1.5010313
Pag. 1290-1293

Felea Viorel1, Cong Phamthan2, Prodan Lilian1, Gritsenko Y.23, Wosnitza Joachim23, Zherlitsyn S.2, Tsurkan Vladimir14
 
1 Institute of Applied Physics, Academy of Sciences of Moldova,
2 Helmholtz-Zentrum Dresden-Rossendorf,
3 Technische Universitat Dresden, Dresden,
4 University of Augsburg
 
Disponibil în IBN: 6 septembrie 2018


Rezumat

We report results of magnetic and ultrasound studies of the sulfide spinel CoCr2S4, for which the multiferroicity has recently been suggested. Clear anomalies in the magnetic and acoustic properties have been observed at TN = 222 K and in applied magnetic fields evidencing the important role of magnetoelastic interactions in this material. In contrast, no anomalies have been detected at TC = 28 K, where a spontaneous electric polarization and isostructural distortions have been reported. We have extracted the H-T phase diagram of CoCr2S4 from our experiments for magnetic fields applied along the 111 direction. We discuss our observations in relation to our earlier results obtained for the oxide multiferroic spinel CoCr2O4.