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Neutron Diffraction Study of the Compressibility of TTF-TCNQ and KCP under Hydrostatic Pressures up to about 20 kbar

  • D. Debray
  • D. Jérome
  • S. Barisic

Abstract

The organic charge-transfer salt TTF-TCNQ (tetrathiafulvalene-tetracyanoquinodimethane) and the Krogmann salt KCP [K2Pt(CN)4Br0.3.3H2O] have been the focus of considerable recent work because of their unusual quasi-one dimensional electronic transport properties and, in case of TTF-TCNQ, its sequence of Peierls and collective phase transitions at low temperatures. We have measured the linear axial compressibilities of deuterated polycrystalline samples of these two compounds under purely hydrostatic pressures up to about 20 kbar by neutron diffraction measurements at room temperature. The high-pressure cell is a piston-cylinder device and a liquid is used as the pressure transmitting medium. The pressure is monitored by a manganin pressure gauge placed directly in the transmitting liquid and calibrated previously by reference to the NaCl pressure scale.

Keywords

Neutron Diffraction Neutron Diffraction Study Chain Axis Neutron Diffraction Measurement Large Lattice Parameter 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1978

Authors and Affiliations

  • D. Debray
    • 1
  • D. Jérome
    • 2
  • S. Barisic
    • 3
  1. 1.Laboratoire Léon Brillouin and DPh-G/PSRMCEN-SaclayGif-sur-YvetteFrance
  2. 2.Laboratoire de Physique des SolidesUniversité Paris-SudOrsayFrance
  3. 3.Institute of Physics of the UniversityZagrebYugoslavia

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