On the pressure induced phase of Na{sub 2}CsC{sub 60}

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Neutron powder diffraction at pressures to 6 kbar in gaseous Ne has been used to study the pressure-induced phase transition and compressibilities of Na{sub 2}CsC{sub 60}. The pressure-induced phase can be achieved by compression to about 5 kbar at room temperature. If cooled, this phase can be retained below 200 K upon release of the pressure. The structure is orthorhombic as previously reported (but may differ in its detailed crystal structure) with lattice constants near 80 K and ambient pressure of a=9.385 A, b=10.06 A, and c=14.36 A. Corresponding linear compressibilities are 0.0004, 0014, and 0.0017 kbar{sup -1}, respectively. Identical ... continued below

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11 p.

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Morosin, B.; Schirber, J. E.; Jorgensen, J. D.; Kwei, G. H.; Yildirim, T. & Fischer, J. E. June 1996.

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Neutron powder diffraction at pressures to 6 kbar in gaseous Ne has been used to study the pressure-induced phase transition and compressibilities of Na{sub 2}CsC{sub 60}. The pressure-induced phase can be achieved by compression to about 5 kbar at room temperature. If cooled, this phase can be retained below 200 K upon release of the pressure. The structure is orthorhombic as previously reported (but may differ in its detailed crystal structure) with lattice constants near 80 K and ambient pressure of a=9.385 A, b=10.06 A, and c=14.36 A. Corresponding linear compressibilities are 0.0004, 0014, and 0.0017 kbar{sup -1}, respectively. Identical pressure temperature cycling results in a superconductor with an unexpectedly low pressure dependence for {Tc} while in this phase. Models for the superconducting behavior of this compound are discussed.

Physical Description

11 p.

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INIS; OSTI as DE96010563

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  • 189. meeting of the Electrochemical Society (ECS), Los Angeles, CA (United States), 5-10 May 1996

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  • Other: DE96010563
  • Report No.: SAND--96-1176C
  • Report No.: ANL/MSD/CP--90766;CONF-960502--14
  • Grant Number: AC04-94AL85000;FG02-86ER45254;W-7405-ENG-48;W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 247416
  • Archival Resource Key: ark:/67531/metadc671566

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  • June 1996

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  • June 29, 2015, 9:42 p.m.

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  • Aug. 1, 2016, 12:47 p.m.

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Morosin, B.; Schirber, J. E.; Jorgensen, J. D.; Kwei, G. H.; Yildirim, T. & Fischer, J. E. On the pressure induced phase of Na{sub 2}CsC{sub 60}, article, June 1996; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc671566/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.