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: Fizika Nizkikh Temperatur. 2017, nr. 11(43), pp. 1618-1621. ISSN 0132-6414.
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Fizika Nizkikh Temperatur
Numărul 11(43) / 2017 / ISSN 0132-6414

Magnetic and acoustic properties of CoCr2S4


Pag. 1618-1621

Felea Viorel1, Cong Phamthan2, Prodan Lilian1, Gritsenko Y.23, Wosnitza Joachim32, Zherlitsyn S.2, Tsurkan Vladimir14
 
1 Institute of Applied Physics, Academy of Sciences of Moldova,
2 Helmholtz-Zentrum Dresden-Rossendorf,
3 Universitatea de Stat din Dresden,
4 University of Augsburg
 
Disponibil în IBN: 12 decembrie 2017


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 interac-tions 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 observa-tions in relation to our earlier results obtained for the oxide multiferroic spinel CoCr2O4.

Cuvinte-cheie
Electric polarization, Magnetic and acoustic properties, Sulfide spinel CoCr2S4