title: Pressure-induced local lattice distortions in α-Co[N(CN)2]2.
abstract: This work brings together diamond anvil cell techniques, vibrational spectroscopies, and complementary lattice dynamics calculations to investigate pressure-induced local lattice distortions in α-Co[N(CN)2]2. Analysis of mode behavior and displacement patterns reveals a series of pressure-driven transitions that modify the CoN6 counter-rotations, distort the octahedra, and flatten the C-N(ax)-C linkages. These local lattice distortions may be responsible for the low temperature magnetic crossover. We also discuss prospects for negative thermal expansion and show that there is not a straightforward low pressure pathway between the pink α and blue β ambient pressure phases of Co[N(CN)2]2.
authors.affiliation: Department of Chemistry, University of Tennessee , Knoxville, Tennessee 37996, United States.
authors.forename: J L
authors.initials: JL
authors.lastname: Musfeldt
authors.forename: T V
authors.initials: TV
authors.lastname: Brinzari
authors.forename: J A
authors.initials: JA
authors.lastname: Schlueter
authors.forename: J L
authors.initials: JL
authors.lastname: Manson
authors.forename: A P
authors.initials: AP
authors.lastname: Litvinchuk
authors.forename: Z
authors.initials: Z
authors.lastname: Liu