Local structural distortion and interrelated phonon mode studies in yttrium chromite

Mannepalli, Venkateswara Rao; Raghunathan, Rajamani; Ramadurai, Ranjith; David, Adrian; Prellier, W.

doi:10.1557/jmr.2017.5

Cited by 5 publications

(2 citation statements)

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“…The local structural inhomogeneity in YCrO 3 was studied by Mannepalli et al [244]. One of the Raman mode B 3g (3) was observed softening and disappearing at temperatures higher than the dielectric transition, which was attributed to the CrO 6 octahedral tilting mode [244,245], indicating that the local structural inhomogeneity may be the reason for the ferroelectricity of YCrO 3 . By the way, the substitution of Bi for Y ions in YCrO 3 also resulted in the local structural inhomogeneity.…”

Section: Opticalmentioning

confidence: 98%

“…By the way, the substitution of Bi for Y ions in YCrO 3 also resulted in the local structural inhomogeneity. In addition, above the dielectric transition temperature, calculations based on the density functional theory reveal that a room-temperature orthorhombic structure with Y-cation distortion transfers into an orthorhombic one without any distortion [245].…”

Section: Opticalmentioning

confidence: 99%

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A comprehensive review on the ferroelectric orthochromates: Synthesis, property, and application

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Relationship between materials processing, microscopic and macroscopic properties, and applications.• Structural and dielectric properties, incompatibility between structure and ferroelectricity, and origin of ferroelectricity.• Nature of weak ferromagnetism in a main antiferromagnetic matrix.• Magnetic properties, negative magnetization, and magnetic reversal behavior.• Optical properties, local polar domains, leakage current, size of charge displacement, and magnetoelectric effect.

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Section: Opticalmentioning

confidence: 98%

Section: Opticalmentioning

confidence: 99%