Naslov
Magnetocrystalline anisotropy in magnetically ordered states of CuO

Autori
Dragičević, M: ; Lafargue-dit-Hauret, W ; Rocquefelte, X. ; Herak, M. ; Kimura, T.

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
10th International School and Conference on Physics and Applications of Spin Phenomena in Solids / - Linz : Johannes Kepler University Linz, 2018, 132-132

Skup
10th International School and Conference on Physics and Applications of Spin Phenomena in Solids

Mjesto i datum
Linz, Austrija, 05.08.2018. - 09.08.2018

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
multiferroics, magnetic anisotropy CuO

Sažetak
Multiferroics are materials where magnetic and ferroelectric order coexist. This opens a possibility of control of magnetic order by both magnetic and electric field which makes these materials potentially technologically important. CuO is quasi-one-dimensional S=1/2 system which is also multiferroic. CuO has three magnetically ordered phases: below T_N1=213 K it is collinear antiferromagnet (AFM1 phase), between T_N1 < T < T_N2 (T_N2 = 229.3 K) it is incommensurable spiral antiferromagnet(AFM2 phase) and also multiferroic, and between T_N2 < T < T_N3 (T_N3 = 230 K) it is incommensurable collinear antiferromagnet (AFM3 phase). Theoretical calculations have shown that CuO could be multiferroic at room temperature under high pressures. Multiferroic state of CuO is still widely studied and not completely understood. Anisotropic interactions, i.e. Dzayloshinskii-Moriya, is expected to play an important role in multiferroic phase [5]. Measuring magnetic anisotropy is thus crucial for understanding of mechanism responsible for multiferroicity in CuO. Macroscopic anisotropy of CuO is studied with torque magnetometry in low magnetic fields in the temperature range 4.2 K – 300 K. All three magnetic phase transitions are observed in torque

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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