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- W2025681710 abstract "The temperature dependence of the ac susceptibility, ensuremath{chi}' and ensuremath{chi}'', was measured in the temperature range from 4.2 to 300 K for various polycrystalline compounds ${mathit{R}}_{2}$${mathrm{Co}}_{17}$, with R=Y, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, and Lu and single-crystalline compounds ${mathit{R}}_{2}$${mathrm{Co}}_{17}$, with R=Pr, Nd, Dy, Tb, Ho, and Er. A spin-reorientation transition was traced in ${mathrm{Pr}}_{2}$${mathrm{Co}}_{17}$ and ${mathrm{Nd}}_{2}$${mathrm{Co}}_{17}$ at 180 and 175 K, respectively. An anomalous phenomenon, which was observed in ${mathit{R}}_{2}$${mathrm{Co}}_{17}$ compounds, with R=Tb, Dy, and Ho, is characterized by a peak in the curve of ensuremath{chi}' and ensuremath{chi}'' versus T. It is deduced that the nature of this anomalous phenomenon is correlated with the magnetic anisotropy within the basal plane. This anomaly is attributed to a temperature-induced domain-wall movement under excitation of the external ac field. For the uniaxial-anisotropy compounds ${mathrm{Er}}_{2}$${mathrm{Co}}_{17}$ and ${mathrm{Tm}}_{2}$${mathrm{Co}}_{17}$, a sharp change of the shape of the temperature dependence of the ac susceptibility was observed. No anomaly in ensuremath{chi}'(T) and ensuremath{chi}''(T) is detectable in ${mathrm{Y}}_{2}$${mathrm{Co}}_{17}$, ${mathrm{Ce}}_{2}$${mathrm{Co}}_{17}$, ${mathrm{Gd}}_{2}$${mathrm{Co}}_{17}$, and ${mathrm{Lu}}_{2}$${mathrm{Co}}_{17}$. The anisotropy field, ${mathit{H}}_{mathit{A}}$, of uniaxial-anisotropy ${mathrm{Ce}}_{2}$${mathrm{Co}}_{17}$, ${mathrm{Sm}}_{2}$${mathrm{Co}}_{17}$, ${mathrm{Er}}_{2}$${mathrm{Co}}_{17}$, and ${mathrm{Tm}}_{2}$${mathrm{Co}}_{17}$ has been determined by the singular-point-detection technique in the temperature range from 4.2 to 1000 K. The easy-magnetization direction of ${mathrm{Ce}}_{2}$${mathrm{Co}}_{17}$ is found to be along the c axis over the whole magnetically ordered temperature." @default.
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- W2025681710 date "1992-09-01" @default.
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- W2025681710 title "ac-susceptibility anomaly and magnetic anisotropy of<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=italic>R</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>Co</mml:mi></mml:mrow><mml:mrow><mml:mn>17</mml:mn></mml:mrow></mml:msub></mml:mrow></…" @default.
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- W2025681710 doi "https://doi.org/10.1103/physrevb.46.6225" @default.
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