The K-state in the Ni-Co alloy

Pařízek, F.; Čížek, A.

doi:10.1007/bf01689858

Cited by 7 publications

(2 citation statements)

References 3 publications

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“…This phenomenon is often discussed in terms of a "komplex" state or K-state [5]. Such alloys are typically rich in late transition metals such as Ni, Pd or Pt and alloyed with a mid-row element such as Cr, Mo or W. This behavior was first observed in Ni 1−x Cr x [5] and later in different materials [6][7][8][9][10] such as Ni 1−x Mo x and Pd 1−x W x alloys. The group contains some important industrial materials such as Ni 1−x Cr x "Nichrome" alloys which are well suited for the production of high-quality resistors [11], high-temperature devices (e.g.…”

mentioning

confidence: 99%

An ab initio investigation of how residual resistivity can decrease when an alloy is deformed

Lowitzer¹,

Ködderitzsch²,

Ebert³

et al. 2010

EPL

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For a class of transition metal materials residual resistivity is observed to decrease when the materials are deformed and short-range order is removed. We investigate this counterintuitive behavior with an ab initio theoretical study of the residual resistivity of several late transition metal-rich disordered alloys. The calculations are performed using the Korringa-Kohn-Rostoker (KKR) method applied to the Kubo-Greenwood formalism. The electronic effects arising from short-range ordering and clustering within the disorder are described using the nonlocal coherent-potential approximation (NL-CPA). We find a simple, general explanation of this K-state-like effect in terms of changes to the amplitude for d-electron hopping between majority late transition metal nearest-neighbor atoms at the Fermi energy.

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confidence: 99%

An ab initio investigation of how residual resistivity can decrease when an alloy is deformed

Lowitzer¹,

Ködderitzsch²,

Ebert³

et al. 2010

EPL

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show abstract

“…This phenomenon is often discussed in terms of a Komplex state or K ‐state 88. Such alloys are typically rich in late transition metals such as Ni, Pd, or Pt and alloyed with a mid‐row element such as Cr, Mo, or W. This behavior was first observed in the important industrial Ni 1– x Cr x Nichrome alloys 88 and later in different materials such as Ni 1– x Mo x and Pd 1– x W x alloys 89–93. When a metallic alloy is cold‐worked the number of dislocations and other defects is increased and atomic SRO is reduced 94.…”

Section: Resistivity Of K‐state Alloysmentioning

confidence: 99%

Electronic and transport properties of disordered transition‐metal alloys

Ködderitzsch

Lowitzer

Staunton

et al. 2011

Physica Status Solidi (b)

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We present a first-principles approach to describe electronic transport of disordered alloys in a material specific way. The electronic structure is represented in terms of the relativistic multiple scattering KKR-Green function. Disorder with possible inclusion of short-ranged order effects is taken into account by the coherent-potential approximation or its nonlocal formulation. A salient feature of the presented method is the possibility to combine it with a linear response Kubo framework, allowing for a detailed investigation of many transport phenomena which are of immediate relevance for applications in which electrons and/or their spin are manipulated. This is illustrated by several examples and developments, among them the description of the residual resistivity of Kstate-and ferromagnetic alloys. Inclusion of relativistic effects by using the Dirac-formalism represents the basis to deal with the anomalous Hall effect and to derive a relativistic spinprojection scheme for currents.

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Mössbauer effect study of the Ni3Co alloy

Zemčík

Vřešťál

1971

Czech J Phys

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The K-state in the Ni-Co alloy

Cited by 7 publications

References 3 publications

An ab initio investigation of how residual resistivity can decrease when an alloy is deformed

An ab initio investigation of how residual resistivity can decrease when an alloy is deformed

Electronic and transport properties of disordered transition‐metal alloys

Mössbauer effect study of the Ni3Co alloy

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