Observation of ferroelectricity and magnetoelectric coupling in Mn-doped orthochromite DyCr 0.5 Mn 0.5 O 3

Yuan, Bin; Yang, Jianbo; Zuo, Xuzhong; Xie, Kun; Zhu, Xiangde; Dai, Jingying; Song, Wenhai; Sun, Yan

doi:10.1016/j.jallcom.2015.10.030

Cited by 16 publications

(2 citation statements)

References 43 publications

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“…Mode frequencies are extracted from the 5 K data by fitting with a sum of 13 Lorentzians (red curves in the figure). The observed spectra are consistent with the assigned Pnma orthorhombic crystal symmetry based on prior studies on perovskite systems [37][38][39][40][41][42][43]. With increasing temperature we observe only minimal changes to the spectra, which implies that the system remains in the Pnma structural phase.…”

Section: Raman Scatteringsupporting

confidence: 89%

“…The weak intensity of modes below 600 cm −1 is curious as perovskites typically exhibit strong, sharp modes in this range [37][38][39]41]. In contrast, double perovskites often exhibit suppressed intensity in this range [41,43]. Studies on Ho and La based compounds have attributed the enhancement of the ∼650 cm −1 modes to charge transfer between the B site atoms that in turn activates oxygen breathing modes [39,44] although octahedral tilt and structural changes also likely contribute [41,44].…”

Section: Raman Scatteringmentioning

confidence: 99%

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Spin reorientation in antiferromagnetic Dy₂FeCoO₆ double perovskite

Haripriya

Heitmann

Yadav

et al. 2020

J. Phys.: Condens. Matter

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We explored the electronic and magnetic properties of the lanthanide double perovskite Dy2FeCoO6 by combining magnetization, Raman and Mössbauer spectroscopy and neutron diffraction along with density functional theory (DFT) calculations. Our magnetization measurements revealed two magnetic phase transitions in Dy2FeCoO6. First, a paramagnetic to antiferromagnetic transition at T N = 248 K and subsequently, a spin reorientation transition at T SR = 86 K. In addition, a field-induced magnetic phase transition with a critical field of H c ≈ 20 kOe is seen at 2 K. Neutron diffraction data suggested cation-disordered orthorhombic structure for Dy2FeCoO6 in Pnma space group which is supported by Raman scattering results. The magnetic structures ascertained through representational analysis indicate that at T N, a paramagnetic state is transformed to Γ5(Cx, Fy, Az) antiferromagnetic structure while, at T SR, Fe/Co moments undergo a spin reorientation to Γ3(Gx, Ay, Fz). The refined magnetic moment of (Fe/Co) is 1.47(4) μ B at 7 K. The antiferromagnetic structure found experimentally is supported through the DFT calculations which predict an insulating electronic state in Dy2FeCoO6.

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