Heat capacity and metal-insulator transition in Ti4O7 single crystals'
Citation:C Schlenker, S Lakkis, J M D Coey and M Marezio 'Heat capacity and metal-insulator transition in Ti4O7 single crystals' in Physical Review Letters, 32, (23), 1974, pp 1318-1321
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Heat-capacity and entropy changes at the metal-insulator transitions have been measured on Ti4O7 single crystals. The 130-K transition is related to a disordering of the Ti3+ and Ti4+ chains at the unit cell level. Ti3+ pairing occurs in this phase but without any long-range order of the bonds. It is shown from both magnetic-susceptibility and specific-heat data that for the 150-K transition, the electronic contribution seems to be of the same order of magnitude as the lattice contribution.
Author: COEY, JOHN MICHAEL DAVID
Publisher:American Physical Society
Series/Report no:Physical Review Letters
Availability:Full text available