P F Schofield and S A T Redfern 1992 J. Phys.: Condens. Matter 4 375 doi:10.1088/0953-8984/4/2/007
P F Schofield and S A T Redfern
Show affiliationsTungstates in the composition range ZnWO4-CuWO4 (sanmartinite-cuproscheelite) have been synthesized. Complete solid solutions between the end members are found for samples annealed at 600 degrees C. The lattice parameters across the solid solution vary continuously and reveal a structural phase transition between the P2/c sanmartinite structure and P1 cuproscheelite structure at around Zn0.78Cu0.22WO4. The spontaneous strain arising in the triclinic phase is large, amounting to some 6.5% in the cuproscheelite end member, and has been used as a measure of the order parameter for the transition. The structural phase transition is potentially ferroelastic and appears continuous as a function of composition at room temperature and pressure. The transition is successfully modelled in terms of a second-order Landau-type phenomenological potential.
77.80.Bh Phase transitions and Curie point
64.70.K- Solid–solid transitions
71.70.Ej Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect
Issue 2 (13 January 1992)
P F Schofield and S A T Redfern 1992 J. Phys.: Condens. Matter 4 375
J D McGee and D McMullan 1969 J. Phys. E: Sci. Instrum. 2 36
Benjamin C. Allanach et al JHEP09(2004)044
Andrea Montanari and Tommaso Rizzo J. Stat. Mech. (2005) P10011
L E Beghian and E Sheldon 2001 J. Phys. A: Math. Gen. 34 2913
Pan Hui and Zhu Jia-Lin 2003 J. Phys.: Condens. Matter 15 7287
Ulvi Yurtsever 1994 Class. Quantum Grav. 11 999
Wu Ya-Bo and Li Jiu-Li 2001 Chinese Phys. Lett. 18 328
A Ashtekar and A Magnon 1984 Class. Quantum Grav. 1 L39
J A Turner et al 1962 J. Sci. Instrum. 39 26