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- W199482308 abstract "We report the resistivity and $^{75}text{A}text{s}$ nuclear magnetic resonance (NMR) results of superconducting ${text{CeFeAsO}}_{0.84}{text{F}}_{0.16}$ and its parent compound CeFeAsO. The derivative of the resistivity with temperature and $^{75}text{A}text{s}$ NMR in CeFeAsO clearly show a signature of the onset of the long-range magnetic ordering. The resistivity in ${text{CeFeAsO}}_{0.84}{text{F}}_{0.16}$ drops sharply at 41 K and becomes zero at 38 K. Analyzing the $^{75}text{A}text{s}$ NMR spectra in ${text{CeFeAsO}}_{0.84}{text{F}}_{0.16}$ and CeFeAsO, we obtained the value of quadrupolar splitting frequency ${ensuremath{nu}}_{Q}=11.0$ and $9.9(ifmmodepmelsetextpmfi{}0.2)text{ }text{MHz}$ and asymmetry parameter $ensuremath{eta}=0.09$ and 0.02, respectively. The shift $({K}_{ab})$ in the oriented $(Hensuremath{parallel}ab)$ ${text{CeFeAsO}}_{0.84}{text{F}}_{0.16}$ sample starts to decrease from 60 K (above ${T}_{c}$). Below 30 K, the NMR line broadens asymmetrically due to the formation of vortex lattice and the observed NMR spectra at 4--10 K clearly resemble the Redfield pattern." @default.
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- W199482308 date "2009-04-15" @default.
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- W199482308 title "<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:mmultiscripts><mml:mtext>A</mml:mtext><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>75</mml:mn></mml:mrow></mml:mmultiscripts><mml:mtext>s</mml:mtext></mml:mrow></mml:math>NMR study of oriented CeFeAsO and<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mtext>CeFeAsO</mml:mtext></mml:mrow><mml:mrow><mml:mn>0.84</mml:mn></mml:mrow></mml:msub><mml…" @default.
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- W199482308 doi "https://doi.org/10.1103/physrevb.79.144512" @default.
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