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- W2820239925 abstract "We report a new multiferroic family of $(R,mathrm{Y}){mathrm{CrO}}_{4}(R=mathrm{Sm},mathrm{Gd},text{and} mathrm{Ho})$. The ferroelectric ordering temperatures are observed at much higher temperatures than their corresponding magnetic ordering temperatures for all the members. The values of electric polarization ($P$) are significantly high, which vary from $ensuremath{sim}217$ to $ensuremath{sim}640phantom{rule{4pt}{0ex}}ensuremath{mu}{mathrm{C}/mathrm{m}}^{2}$ for a 4 kV/cm poling field. The large value of $Pphantom{rule{0.16em}{0ex}}(ensuremath{sim}590phantom{rule{4pt}{0ex}}ensuremath{mu}{mathrm{C}/mathrm{m}}^{2})$ for ${mathrm{YCrO}}_{4}$ compared to the smallest $P$ value in the series for ${mathrm{GdCrO}}_{4}$ signifies that the magnetic rare-earth element does not directly influence the $P$ value. Our careful analysis of the low-temperature synchrotron diffraction studies confirms that the distortion of ${mathrm{CrO}}_{4}$ tetrahedra directs the $P$ value. The structural transformation from the centrosymmetric $I{4}_{1}/amd$ structure to a noncentrosymmetric $Ioverline{4}2d$ space group at the onset of polar order is found to be correlated with the appearance of spontaneous electric polarization." @default.
- W2820239925 created "2018-07-19" @default.
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- W2820239925 date "2018-07-05" @default.
- W2820239925 modified "2023-10-14" @default.
- W2820239925 title "<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:msub><mml:mi mathvariant=normal>CrO</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:math> distortion-driven ferroelectric order in <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:mi>R</mml:mi><mml:mo>,</mml:mo><mml:mi mathvariant=normal>Y</mml:mi><mml:mo>)</mml:mo></mml:mrow><mml:msub><mml:mi mathvariant=normal>CrO</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:mrow><mml:mrow><mml:mo…" @default.
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- W2820239925 doi "https://doi.org/10.1103/physrevb.98.014408" @default.
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