Structural changes of the superconductor YBa2Cu3O7 by cobalt substitution. A high-resolution neutron powder diffraction study

Sonntag, R.; Hohlwein, D.; Hoser, A.; Prandl, W.; Schäfer, Wolfgang; Kiemel, R.; Kemmler‐Sack, S.; Lösch, S.; Schlichenmaier, Martin; Hewat, A.W.

doi:10.1016/0921-4534(89)90116-0

Cited by 54 publications

(2 citation statements)

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“…The addition of a magnetic impurity to the high-T c superconductor YBa 2 Cu 3 O y is more complicated because of the presence of two copper sites, a plane and a chain. Different impurities have preferential occupancies, for instance impurities such as Fe, Co and Al occupy the plane sites whereas Ni, Zn, etc, occupy the chain sites [2][3][4][5][6][7][8][9][10]. The extent of the drop in T c depends on the type of impurity added.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ni doping on the thermal expansion of the high- superconductor

Rao

1996

J. Phys.: Condens. Matter

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Thermal expansion measurements have been carried out for the Ni-substituted compounds with a high-resolution dilatometer using the three-terminal capacitance technique. The present set-up is sensitive enough to detect changes in of less than . Results indicate that the jump in the coefficient of linear thermal expansion decreases with increase in Ni content. For x = 1.5%, decreases by a factor of 3 whereas does not change appreciably. There is evidence that the temperature dependence of for compounds with high Ni concentration depends on the conditions of sample growth.

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Section: Introductionmentioning

confidence: 99%

Effect of Ni doping on the thermal expansion of the high- superconductor

Rao

1996

J. Phys.: Condens. Matter

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“…On the other hand, it was reported that the Tc is monotonously decreased with increasing x in Bi2Sr2Ca(Cuix M x )20y for 3d metals (M=Fe and Co) [7][8][9][10][11][12]. For Zn, the 7c-suppression is much less apparent [10,13].…”

Section: Introductionmentioning

confidence: 97%