Non-Contact Thermal Wave Imaging Using Infrared Radiation
H. Emert, R.L. Melcher, et al.
IUS 1984
The temperature dependence of the elastic constant 12(c11-c12) shows that the B1g acoustic phonon branch is the soft mode at the cooperative Jahn-Teller phase transition in DyVO4. For T>2T D (T D is the transition temperature) the data can be described by mean field theory and show that the dominant driving mechanism for the transition is the coupling of the Jahn-Teller ions to the static elastic strain. However, for T D<T<2T D we find significant deviations from mean field theory due to critical fluctuations. © 1972 The American Physical Society.
H. Emert, R.L. Melcher, et al.
IUS 1984
G. Burns, E.A. Giess, et al.
Journal of Applied Physics
S. Gates, B.A. Scott, et al.
Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
F. Mehran, B.A. Scott
Physica B+C