A study of superconductivity in interstitial compounds

Pessall, N.; Gold, R. E.; Johansen, H. A.

doi:10.1016/0022-3697(68)90251-5

Cited by 146 publications

(42 citation statements)

References 18 publications

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“…The values of T c and the volume fraction decreased with the decreasing ammonolysis temperature, as summarized in Table 1. The temperature was lower than the reported value of 17.5K, 25 probably due to the structural imperfection originated from the intercalated layer structure as described in next section. The oxygen and nitrogen contents were measured with an oxygen/nitrogen analyzer (EMGA-620W, Horiba) using inert gas fusion method.…”

Section: Faculty Of Engineering Hokkaido University N13 W8 Kita-kucontrasting

confidence: 58%

Ammonolysis of HTiNbO5–n-Propylamine Intercalation Compound

Masubuchi¹,

Yamakami²,

Motohashi³

et al. 2011

Chemistry Letters

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The ammonolysis reaction to form (Ti,Nb)N was enhanced by the use of HTiNbO5–n-propylamine intercalation compound as a starting material and compared with that for a simple mixture of TiO2 and Nb2O5. The ammonolysis product formed at 1200 °C was a superconductor (Tc = 15 K) with a rock-salt crystal structure having many structural defects along the stacking direction of the intercalation compound.

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Section: Faculty Of Engineering Hokkaido University N13 W8 Kita-kucontrasting

confidence: 58%

Ammonolysis of HTiNbO5–n-Propylamine Intercalation Compound

Masubuchi¹,

Yamakami²,

Motohashi³

et al. 2011

Chemistry Letters

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“…The traditional applications of these materials range from cutting tools and structural materials [2,3] to magnetic and electric components [4], and superconducting devices [5][6][7]. Among them, vanadium nitride (VN) is suitable for many uses due to its typical properties including extreme hardness, wear resistance, excellent oxidative stability and corrosion resistance, high-temperature stability, and electrical conductivity [8].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of VN nanopowders by thermal nitridation of the precursor and their characterization

Zhao

Liu

Cao

et al. 2008

Journal of Alloys and Compounds

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“…Vanadium nitride (VN) has extreme hardness, high-temperature stability, and electrical conductivity that make this material suitable for many uses. The traditional applications of these materials range from cutting tools and structural materials [1,2] to magnetic and electric components [3], and superconducting devices [4][5][6]. Moreover, there is increasing interest on vanadium nitride as an important industrial catalyst known for its selectivity and stability [7,8].…”

Section: Introductionmentioning

confidence: 99%

Carbothermal synthesis of vanadium nitride: Kinetics and mechanism

Ortega

Roldán

Real

2006

Int J of Chemical Kinetics

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Constant rate thermal analysis (CRTA) has been used for the first time to study the kinetics of the carbothermal reduction of V 2 O 5 in nitrogen to obtain vanadium nitride. It is noteworthy to point out that CRTA method allows both a good control of pressure in the sample surroundings and the use of reaction rates low enough to keep temperatures gradients at a negligible level to avoid any heat or mass transfer phenomena. This method allows one to control the texture and the structure of many materials through kinetic control of the thermal treatment of the precursors. The precise control of the external parameters of the reaction shows that CRTA is an attractive method for kinetic studies and leads to more reliable kinetic data. It has been shown that the carbothermal synthesis of vanadium nitride is best described by a three-dimensional diffusion kinetic model (the Jander equation) with an activation energy which falls in the range of 520-540 kJ/mol. C

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A study of superconductivity in interstitial compounds

Cited by 146 publications

References 18 publications

Ammonolysis of HTiNbO5–n-Propylamine Intercalation Compound

Ammonolysis of HTiNbO5–n-Propylamine Intercalation Compound

Synthesis of VN nanopowders by thermal nitridation of the precursor and their characterization

Carbothermal synthesis of vanadium nitride: Kinetics and mechanism

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