Ultrarapid microwave synthesis of superconducting refractory carbides

Simon R. Vallance; Dave M. Round; Clemens Ritter; Edmund J. Cussen; Sam Kingman; Duncan H. Gregory

doi:10.1002/adma.200900968

Ultrarapid microwave synthesis of superconducting refractory carbides

Simon R. Vallance, Dave M. Round, Clemens Ritter, Edmund J. Cussen, Sam Kingman, Duncan H. Gregory

Pure And Applied Chemistry

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

Nb1−xTaxC Carbides can be synthesized by high power MW methods in less than 30 s. In situ and ex situ techniques probing changes in temperature and dielectric properties with time demonstrate that the reactions self-terminate as the loss tangent of the materials decreases. The resulting carbides are carbon deficient and superconducting; Tc correlates linearly to unit cell volume, reaching a maximum at NbC.

Original language	English
Pages (from-to)	4502-4504
Number of pages	3
Journal	Advanced Materials
Volume	21
Issue number	44
Early online date	1 Jul 2009
DOIs	https://doi.org/10.1002/adma.200900968
Publication status	Published - 26 Nov 2009

Keywords

carbides
microwaves
neutron diffraction
superconductivity
transition metals

Access to Document

10.1002/adma.200900968

Cite this

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title = "Ultrarapid microwave synthesis of superconducting refractory carbides",

abstract = "Nb1−xTaxC Carbides can be synthesized by high power MW methods in less than 30 s. In situ and ex situ techniques probing changes in temperature and dielectric properties with time demonstrate that the reactions self-terminate as the loss tangent of the materials decreases. The resulting carbides are carbon deficient and superconducting; Tc correlates linearly to unit cell volume, reaching a maximum at NbC. ",

keywords = "carbides, microwaves, neutron diffraction, superconductivity, transition metals",

author = "Vallance, {Simon R.} and Round, {Dave M.} and Clemens Ritter and Cussen, {Edmund J.} and Sam Kingman and Gregory, {Duncan H.}",

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T1 - Ultrarapid microwave synthesis of superconducting refractory carbides

AU - Vallance, Simon R.

AU - Round, Dave M.

AU - Ritter, Clemens

AU - Cussen, Edmund J.

AU - Kingman, Sam

AU - Gregory, Duncan H.

PY - 2009/11/26

Y1 - 2009/11/26

N2 - Nb1−xTaxC Carbides can be synthesized by high power MW methods in less than 30 s. In situ and ex situ techniques probing changes in temperature and dielectric properties with time demonstrate that the reactions self-terminate as the loss tangent of the materials decreases. The resulting carbides are carbon deficient and superconducting; Tc correlates linearly to unit cell volume, reaching a maximum at NbC.

AB - Nb1−xTaxC Carbides can be synthesized by high power MW methods in less than 30 s. In situ and ex situ techniques probing changes in temperature and dielectric properties with time demonstrate that the reactions self-terminate as the loss tangent of the materials decreases. The resulting carbides are carbon deficient and superconducting; Tc correlates linearly to unit cell volume, reaching a maximum at NbC.

KW - carbides

KW - microwaves

KW - neutron diffraction

KW - superconductivity

KW - transition metals

U2 - 10.1002/adma.200900968

DO - 10.1002/adma.200900968

M3 - Article

VL - 21

SP - 4502

EP - 4504

JO - Advanced Materials

JF - Advanced Materials

SN - 1521-4095

IS - 44

ER -