Effect of Ni-site substitutions in superconducting<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">La</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Ni</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">B</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mm

Michor, H.; Hilscher, G.; Krendelsberger, R.; Rogl, P.; Bourée, F.

doi:10.1103/physrevb.58.15045

Cited by 15 publications

(2 citation statements)

References 26 publications

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“…2,3 Nickel-site substitutions on both the borocarbides and the boronitride revealed similar electronic properties of the bands related to the 3d electrons. 4 At a first glance, the thermodynamic properties of La 3 Ni 2 B 2 N 3Ϫ␦ seem to be close to the weak coupling BCS predictions, 5 but standard single-band BCS theory cannot explain the pronounced upward curvature of the upper critical field H c2 (T) close to T c . If applied to the borocarbides, it fails to describe both the thermodynamic properties and the upper critical field obtained from experiment.…”

Section: Introductionmentioning

confidence: 72%

Superconducting properties ofYxLu1−xNi
Manalo
¹
,
Michor
²
,
El-Hagary
³

et al. 2001
Phys. Rev. B
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Specific heat and resistivity measurements were performed on polycrystalline samples of the solid-solution Y x Lu 1Ϫx Ni 2 B 2 C in order to determine thermodynamic properties such as the specific-heat difference ⌬C, the thermodynamic critical field H c (T), as well as the upper critical field H c2 (T). These properties were analyzed within the Eliashberg theory including anisotropy effects, yielding electron-phonon coupling anisotropy parameters ͗a k 2 ͘ ranging between 0.02 and 0.03 for the whole series, and Fermi velocity anisotropy parameters of ͗b k 2 ͘ϭ0.245-0.3. Excellent agreement between theory and experiment was achieved for these parameters, the Sommerfeld constant ␥ and model phonon spectra determined from specific heat measurements. An analysis of the previously investigated boronitride La 3 Ni 2 B 2 N 3Ϫ␦ for comparison revealed the electron-phonon anisotropy to be of great significance in describing its thermodynamic properties and the calculations yielded ͗a k 2 ͘ Ӎ0.08 and ͗b k 2 ͘Ӎ0.245. The T c behavior within the series Y x Lu 1Ϫx Ni 2 B 2 C is discussed in terms of the density of states at the Fermi level N(0).

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Section: Introductionmentioning

confidence: 72%

Superconducting properties ofYxLu1−xNi
Manalo
¹
,
Michor
²
,
El-Hagary
³

et al. 2001
Phys. Rev. B
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40
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“…It is, however, surprising that no compound analogous to La 3 Ni 2 (BN) 2 N has been reported until now in which lanthanum is replaced by another rare-earth element, or Ni is replaced by another transition element (except for partial substitutions reported, e.g. with cobalt [11]). Band structure calculations have suggested that the nickel 3d bands fall below the Fermi level, indicating that nickel can be even negatively charged due to partial occupations of 4s and 4p bands.…”

Section: Introductionmentioning

confidence: 99%

Crystal Structure of Ce₃Ni₂(BN)₂N and Magnetic Behavior of (CeNi(BN))₂(CeN)_x with x = 0, 1

Gläser

Mori

Meyer

2008

Zeitschrift anorg allge chemie

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The new compound Ce 3 Ni 2 (BN) 2 N was synthesized by a modified solid state metathesis reaction. The crystal structure of Ce 3 Ni 2 (BN) 2 N was found to be isotypic with the superconducting compound La 3 Ni 2 (BN) 2 N, according to Rietveld refinements performed on X-ray powder data (I4/mmm, Z ϭ 2, a ϭ 3.5817(1) Å , c ϭ 20.283(1) Å ). Corresponding solid state reactions of mixtures composed of CeN/NiB and CeNi/BN yielded CeNi(BN) and a mixture of the 1067 two closely related layered structures (CeNi(BN)) 2 (CeN) x with x ϭ 0 and 1. Magnetization experiments on these samples revealed temperature independent paramagnetic behavior for Ce 3 Ni 2 (BN) 2 N and CeNi(BN) without any magnetic ordering down to 5 K.

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Chemical and Superconducting Properties of the Quaternary Borocarbides Ln–M–B–C (Ln=rare earths, Y; M=Ni, Pd)

Tominez

Alleno

Berger

et al. 2000

Journal of Solid State Chemistry

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Effect of Ni-site substitutions in superconductingLa3Ni2B2

Cited by 15 publications

References 26 publications

Superconducting properties ofYxLu1−xNi
Manalo
¹
,
Michor
²
,
El-Hagary
³

et al. 2001
Phys. Rev. B
Self Cite
40
4
26
1
View full text Add to dashboard Cite

Superconducting properties ofYxLu1−xNi
Manalo
¹
,
Michor
²
,
El-Hagary
³

et al. 2001
Phys. Rev. B
Self Cite
40
4
26
1
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Crystal Structure of Ce₃Ni₂(BN)₂N and Magnetic Behavior of (CeNi(BN))₂(CeN)_x with x = 0, 1

Chemical and Superconducting Properties of the Quaternary Borocarbides Ln–M–B–C (Ln=rare earths, Y; M=Ni, Pd)

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Effect of Ni-site substitutions in superconductingLa3Ni2B2

Cited by 15 publications

References 26 publications

Superconducting properties ofYxLu1−xNiManalo1, Michor2, El-Hagary3 et al. 2001Phys. Rev. BSelf Cite404261View full textAdd to dashboardCite

Superconducting properties ofYxLu1−xNiManalo1, Michor2, El-Hagary3 et al. 2001Phys. Rev. BSelf Cite404261View full textAdd to dashboardCite

Crystal Structure of Ce3Ni2(BN)2N and Magnetic Behavior of (CeNi(BN))2(CeN)x with x = 0, 1

Chemical and Superconducting Properties of the Quaternary Borocarbides Ln–M–B–C (Ln=rare earths, Y; M=Ni, Pd)

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Superconducting properties ofYxLu1−xNi
Manalo
¹
,
Michor
²
,
El-Hagary
³

et al. 2001
Phys. Rev. B
Self Cite
40
4
26
1
View full text Add to dashboard Cite

Superconducting properties ofYxLu1−xNi
Manalo
¹
,
Michor
²
,
El-Hagary
³

et al. 2001
Phys. Rev. B
Self Cite
40
4
26
1
View full text Add to dashboard Cite

Crystal Structure of Ce₃Ni₂(BN)₂N and Magnetic Behavior of (CeNi(BN))₂(CeN)_x with x = 0, 1