Temperature- and magnetic-field-induced magnetization reversal in perovskite YFe0.5Cr0.5O3

Abstract

Perovskite YFe0.5Cr0.5O3 exhibits magnetization reversal at low applied fields due to the competition between the single ion magnetic anisotropy and the antisymmetric Dzyaloshinsky–Moriya interaction. Below a compensation temperature (Tcomp), a tunable bipolar switching of magnetization is demonstrated by changing the magnitude of the field while keeping it in the same direction. The present compound also displays both normal and inverse magnetocaloric effects above and below 260 K, respectively. These phenomena coexisting in a single magnetic system can be tuned in a predictable manner and have potential applications in electromagnetic devices.

Weak ferromagnetism and magnetization reversal in YFe 1−x Cr x O 3

“…These two together suggest that changes in spin structure induce changes in the lattice structure, which implies the existence of significant spin-phonon coupling. Indeed, recent experiments 20 have indicated a multiferroic nature of the YFe 0.5 Cr 0.5 O 3 material. The microscopic justification for the x dependence of the parameters obtained here would require a detailed analysis of the structural changes in the orthorhombic lattice due to the size differences in the Fe/Cr ions.…”

“…However, for intermediate compositions x = 0.4 and 0.5, a surprising temperature-dependent MR is observed. The possibility of finding MR in this system was indeed conjectured more than three decades ago 19 , but was not demonstrated until recently 20 (for x = 0.5). The previously mentioned mechanisms for MR do not explain our findings.…”

Reversal magnetization, spin reorientation, and exchange bias in YCrO3 doped with praseodymium

“…Different combinations of rare earth and transition metal ions including a relative concentration between them can produce ferroelectric polarization at the magnetic ordering and a characteristic behavior called magnetization arXiv:1801.04967v1 [cond-mat.mtrl-sci] 15 Jan 2018 reversal (MR). MR means that the magnetization turns to diamagnetic state a certain temperature (compensation temperature, T * ) under low applied magnetic field [16][17][18]. This phenomenon is not exclusive of these compounds but rather of a larger group of materials such as spinels, garnets, orthovanadates and Prussian blue analogs [19][20][21][22].…”

Exchange bias in a mixed metal oxide based magnetocaloric compound YFe0.5Cr0.5O3

“…The combination of 3d-3d or 3d-4d/5d element in a perovskite structured oxide of the form AB′ 1-x where Ln=La, Y and Dy [1][2][3][4][5][6][7]. Combining the two transitions metal within the perovskite structure can be an effective approach of enhance the magnetic property and at the same time tune/induce functional properties as compared to their parent compounds.…”