New Antiperovskite-Type Superconductor ZnNyNi3

Uehara, M.; Uehara, Akira; Kozawa, Katsuya; Kimishima, Y.

doi:10.1143/jpsj.78.033702

Cited by 57 publications

(60 citation statements)

References 30 publications

(21 reference statements)

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“…Aside from manganese, nickel, for example, also forms a series of antiperovskite Ni 3 AX. Ni 3 MgC [54] and Ni 3 ZnN 1−δ [55] are known as superconductors.…”

Section: Methodsmentioning

confidence: 99%

Negative thermal expansion materials: technological key for control of thermal expansion

Takenaka

2012

Science and Technology of Advanced Materials

479

311

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Most materials expand upon heating. However, although rare, some materials contract upon heating. Such negative thermal expansion (NTE) materials have enormous industrial merit because they can control the thermal expansion of materials. Recent progress in materials research enables us to obtain materials exhibiting negative coefficients of linear thermal expansion over −30 ppm K −1 . Such giant NTE is opening a new phase of control of thermal expansion in composites. Specifically examining practical aspects, this review briefly summarizes materials and mechanisms of NTE as well as composites containing NTE materials, based mainly on activities of the last decade.

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“…Aside from manganese, nickel, for example, also forms a series of antiperovskite Ni 3 AX. Ni 3 MgC [54] and Ni 3 ZnN 1−δ [55] are known as superconductors.…”

Section: Methodsmentioning

confidence: 99%

Negative thermal expansion materials: technological key for control of thermal expansion

Takenaka

2012

Science and Technology of Advanced Materials

479

311

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“…22) It provides another route of synthesizing superconducting compound though its superconducting temperature is very low. Due to a great deal of attention on antiperovskite ZnNNi 3 , several research groups have investigated the physical properties of ZnNNi 3 .…”

Section: -7)mentioning

confidence: 99%

“…33) In Table 1, the obtained equilibrium lattice constant, the bulk modulus B 0 and its pressure derivative B 0 0 for ZnNNi 3 are summarized, together with the available experimental data 22) and other theoretical results. [23][24][25][26] To our knowledge, in the absence of experimental data, it is difficult to make any comments on our calculated results except lattice constant.…”

Section: Structure and Equation Of Statementioning

confidence: 99%

Structural and Thermodynamic Properties of Perovskite-Type Superconductor ZnNNi3 by First-Principles Calculations

Zhang

2011

Mater. Trans.

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The structural and thermodynamic properties of the non-oxide superconductor ZnNNi 3 are investigated by using ab initio plane-wave pseudo potential density functional theory method within the generalized gradient approximation (GGA). The calculated lattice constants, the bulk modulus and its pressure derivative, and elastic constants of ZnNNi 3 at zero temperature and pressure are in good agreement with the available theoretical and experimental data. The thermodynamic properties of ZnNNi 3 are predicted by using the quasi-harmonic Debye model. The pressure-volume-temperature (P-V-T) relationship, the bulk modulus B 0 and bulk modulus B, the variations of the thermal expansion coefficient and the heat capacity C V , C P with pressure P and temperature T, as well as the Grüneisen parameter-pressure-temperature (-P-T) relationships are obtained systematically in the ranges of 0-70 GPa and 0-1000 K.

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“…Recently, the discovery of a new superconducting (T C $ 3 K) cubic antiperovskite ZnNNi 3 has been reported in the experimental work of Uehara et al 22,23 This material is the third Ni-rich antiperovskite series and the first antiperovskite nitride superconducting material. The discovery of superconductivity in ZnNNi 3 has motivated several groups [24][25][26][27][28][29] to study the structural and electronic properties of this material.…”

Section: Introductionmentioning

confidence: 99%

Theoretical examination of superconductivity in the cubic antiperovskite Cr3GaN under pressure

Tütüncü

Srivastava

2013

Journal of Applied Physics

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We present results of a first-principles investigation of the lattice dynamics and electron-phonon coupling of Cr3GaN under pressure within a linear response approach based on density functional perturbation theory. It is found that stable phonon modes are maintained throughout the Brillouin zone in the pressure range 0-100 GPa. Our results at zero pressure indicate that the material is a conventional electron-phonon superconductor with intermediate level of coupling strength. It is further found that the decrease in the density of states at the Fermi level and the increase of phonon frequencies under pressure are the main causes for a monotonic decrease of the electron-phonon coupling parameter and the superconductor transition temperature.

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New Antiperovskite-Type Superconductor ZnN_yNi₃

Cited by 57 publications

References 30 publications

Negative thermal expansion materials: technological key for control of thermal expansion

Negative thermal expansion materials: technological key for control of thermal expansion

Structural and Thermodynamic Properties of Perovskite-Type Superconductor ZnNNi<SUB>3</SUB> by First-Principles Calculations

Theoretical examination of superconductivity in the cubic antiperovskite Cr3GaN under pressure

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