Synthesis, structural and magnetic studies of the CuCr1-xCoxO2 delafossite oxide
Identifieur interne : 000261 ( PascalFrancis/Curation ); précédent : 000260; suivant : 000262Synthesis, structural and magnetic studies of the CuCr1-xCoxO2 delafossite oxide
Auteurs : T. Elkhouni [Tunisie] ; M. Amami [Tunisie] ; C. V. Colin [France] ; P. Strobel [France] ; A. Ben Salah [Tunisie]Source :
- Journal of magnetism and magnetic materials [ 0304-8853 ] ; 2013.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
We modulate the spin chirality and the magnetization in CuCrO2, by doping at Cr3+ sites with magnetic ions of slightly different size. Structure and magnetic properties of delafossite oxide CuCr1-xCoxO2 (0≤x≤0.06) have been investigated. With the substitution of magnetic Co3+ for Cr3+ (S=3/2), the antiferromagnetic (AF) transition becomes broader and the transition temperature increases. However, at low temperature, the magnetic data for CuCr, -xCoxO2 shows evidence for weak ferromagnetism. Comparing the substitution effect of Co3+ to those of other magnetic metal transition, magnetization around the AF transition does not seem to correlate with randomness and lattice parameter.
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Co<sub>x</sub>
O<sub>2</sub>
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<front><div type="abstract" xml:lang="en">We modulate the spin chirality and the magnetization in CuCrO<sub>2</sub>
, by doping at Cr<sup>3+</sup>
sites with magnetic ions of slightly different size. Structure and magnetic properties of delafossite oxide CuCr<sub>1-x</sub>
Co<sub>x</sub>
O<sub>2</sub>
(0≤x≤0.06) have been investigated. With the substitution of magnetic Co<sup>3+</sup>
for Cr<sup>3+</sup>
(S=3/2), the antiferromagnetic (AF) transition becomes broader and the transition temperature increases. However, at low temperature, the magnetic data for CuCr, -<sub>x</sub>
Co<sub>x</sub>
O<sub>2</sub>
shows evidence for weak ferromagnetism. Comparing the substitution effect of Co<sup>3+</sup>
to those of other magnetic metal transition, magnetization around the AF transition does not seem to correlate with randomness and lattice parameter.</div>
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Co<sub>x</sub>
O<sub>2</sub>
(0≤x≤0.06) have been investigated. With the substitution of magnetic Co<sup>3+</sup>
for Cr<sup>3+</sup>
(S=3/2), the antiferromagnetic (AF) transition becomes broader and the transition temperature increases. However, at low temperature, the magnetic data for CuCr, -<sub>x</sub>
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