Microstructure and pinning properties of hexagonal-disc shaped single crystalline MgB2

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We synthesized hexagonal-disc-shaped MgB2 single crystals under high-pressure conditions and analyzed the microstructure and pinning properties. The lattice constants and the Laue pattern of the crystals from x-ray micro-diffraction showed the crystal symmetry of MgB2. A thorough crystallographic mapping within a single crystal showed that the edge and c axis of hexagonal-disc shape exactly matched the [10-10] and the [0001] directions of the MgB2 phase. Thus, these well-shaped single crystals may be the best candidates for studying the direction dependences of the physical properties. The magnetization curve and the magnetic hysteresis curve for these single crystals showed the existence of ... continued below

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Jung, C.U.; Kim, J.Y.; Chowdhury, P.; Kim, Kijoon H.P.; Lee, Sung-Ik; Koh, D.S. et al. December 12, 2002.

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We synthesized hexagonal-disc-shaped MgB2 single crystals under high-pressure conditions and analyzed the microstructure and pinning properties. The lattice constants and the Laue pattern of the crystals from x-ray micro-diffraction showed the crystal symmetry of MgB2. A thorough crystallographic mapping within a single crystal showed that the edge and c axis of hexagonal-disc shape exactly matched the [10-10] and the [0001] directions of the MgB2 phase. Thus, these well-shaped single crystals may be the best candidates for studying the direction dependences of the physical properties. The magnetization curve and the magnetic hysteresis curve for these single crystals showed the existence of a wide reversible region and weak pinning properties, which supported our single crystals being very clean.

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  • Journal Name: Physical Review B; Journal Volume: 66; Journal Issue: 18; Other Information: Journal Publication Date: November 1, 2002

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  • Report No.: LBNL--51886
  • Grant Number: AC03-76SF00098
  • DOI: 10.1103/PhysRevB.66.184519 | External Link
  • Office of Scientific & Technical Information Report Number: 807442
  • Archival Resource Key: ark:/67531/metadc738889

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  • December 12, 2002

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  • Oct. 18, 2015, 6:40 p.m.

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  • April 4, 2016, 3:27 p.m.

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Jung, C.U.; Kim, J.Y.; Chowdhury, P.; Kim, Kijoon H.P.; Lee, Sung-Ik; Koh, D.S. et al. Microstructure and pinning properties of hexagonal-disc shaped single crystalline MgB2, article, December 12, 2002; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc738889/: accessed October 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.