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Issue 4, 2012
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Fabrication of the best conductor from single-crystal copper and the contribution of grain boundaries to the Debye temperature

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Abstract

The scientific community has attempted to fabricate superconductors that work at room temperature; however, this goal has not yet been achieved. Considering miniaturization of devices and the requirement of low-power consumption in electronics, it is important to enhance room-temperature conductivity. We prepared the best conductor using crystallization and enhanced its conduction using high-pressure annealing. Single-crystal copper showed a conductivity enhancement of 12–14% after treatment under high pressure and temperature compared with that of oxygen-free copper, which has the highest conductivity for a metal. The contribution of grain boundaries to the Debye temperature was calculated and the phonon excitation was maximized at a lower temperature in grain-free copper. This study aimed to develop a new conductor, in which phonon–electron scattering is reduced at high temperatures. Single-crystal copper could be used for large-scale production of Bitter magnets to generate a high magnetic field and for applications of crystal engineering.

Graphical abstract: Fabrication of the best conductor from single-crystal copper and the contribution of grain boundaries to the Debye temperature

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Publication details

The article was received on 09 Aug 2011, accepted on 04 Nov 2011 and first published on 12 Dec 2011


Article type: Paper
DOI: 10.1039/C1CE06026K
Citation: CrystEngComm, 2012,14, 1463-1467
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    Fabrication of the best conductor from single-crystal copper and the contribution of grain boundaries to the Debye temperature

    M. Ajmal, S. Lee, Y. C. Cho, S. J. Kim, S. E. Park, C. R. Cho and S. Jeong, CrystEngComm, 2012, 14, 1463
    DOI: 10.1039/C1CE06026K

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