Superconductivity and Magnetism in Dy1−xLuxNi2B2C Compounds

Ikeda, E.; Mori, Kento; Nishimura, Katsuyuki

doi:10.1063/1.2354897

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“…17) The rapid suppression of superconductivity in non-magnetic Y or Lu diluted DyNi 2 B 2 C systems are also reported. [18][19][20][21][22] The magnetic structure of DyNi 2 B 2 C consists of ferromagnetically aligned Dy spins in the ab-plane, but antiferromagnetically coupled along the caxis. 13,20) To further understand the effect of nonmagnetic ion substitution on antiferromagnetic superconductors, the crystal structure, superconductivity, and magnetization of the Dy 1Àx Lu x Ni 2 B 2 C (x ¼ 0 {1) system were systematically studied.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nonmagnetic Ion Lu Substitution for Dy on Superconductivity and Magnetism in Antiferromagnetic Superconductor Dy_1-xLu_xNi₂B₂C Compound

Nishimura

Ikeda

2007

jjap

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A series of Dy 1Àx Lu x Ni 2 B 2 C (x ¼ 0 {1) compounds have been investigated by X-ray diffraction and by examining the temperature dependences of electrical resistivity, magnetization and heat capacity. All the samples exhibit the same LuNi 2 B 2 C-type structure; and lattice parameters depend almost linearly on the Lu concentration x. The superconducting transition temperature T c decreases rapidly with increasing x, and superconductivity disappears at approximately x ¼ 0:2, then increases with a further increase in x. The magnetic transition temperature T M and the effective magnetic moment P eff decrease gradually with increasing x. The ferrimagnetic-like behavior emerges at about x ¼ 0:2; which can be the main reason causing the suppression of superconductivity. The temperature dependence of the magnetic entropy S m originated from Dy ions has been evaluated on the basis of heat capacity data. The saturated values of S m ðTÞ=ð1 À xÞ are approximately 90% of R ln 4 and the effective magnetic moment normalized by Dy concentration is almost unchanged, which indicates that the magnetic ground state of Dy 3þ does not show a pronounced change.

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Section: Introductionmentioning

confidence: 99%

Effect of Nonmagnetic Ion Lu Substitution for Dy on Superconductivity and Magnetism in Antiferromagnetic Superconductor Dy_1-xLu_xNi₂B₂C Compound

Nishimura

Ikeda

2007

jjap

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Superconductivity and Magnetism in Dy1−xLuxNi2B2C Compounds

Cited by 1 publication

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Effect of Nonmagnetic Ion Lu Substitution for Dy on Superconductivity and Magnetism in Antiferromagnetic Superconductor Dy_1-xLu_xNi₂B₂C Compound

Effect of Nonmagnetic Ion Lu Substitution for Dy on Superconductivity and Magnetism in Antiferromagnetic Superconductor Dy_1-xLu_xNi₂B₂C Compound

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Superconductivity and Magnetism in Dy1−xLuxNi2B2C Compounds

Cited by 1 publication

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Effect of Nonmagnetic Ion Lu Substitution for Dy on Superconductivity and Magnetism in Antiferromagnetic Superconductor Dy1-xLuxNi2B2C Compound

Effect of Nonmagnetic Ion Lu Substitution for Dy on Superconductivity and Magnetism in Antiferromagnetic Superconductor Dy1-xLuxNi2B2C Compound

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Effect of Nonmagnetic Ion Lu Substitution for Dy on Superconductivity and Magnetism in Antiferromagnetic Superconductor Dy_1-xLu_xNi₂B₂C Compound

Effect of Nonmagnetic Ion Lu Substitution for Dy on Superconductivity and Magnetism in Antiferromagnetic Superconductor Dy_1-xLu_xNi₂B₂C Compound