The critical behavior occurring at displacive phase transitions in anisotropically stressed perovskite crystals is examined. It is shown that, under various conditions, the asymptotic critical behavior may be of Ising, XY-model, or Heisenberg type. The existence of a "spin-flop"-like transition (at zero stress) between two differently ordered phases is predicted. An explanation of the discrepancy between the measured exponents and those predicted theoretically is proposed, and several new experiments are suggested.
|Number of pages||4|
|Journal||Physical Review Letters|
|State||Published - 1 Jan 1974|
ASJC Scopus subject areas
- Physics and Astronomy (all)