TY - JOUR
T1 - Polycritical points and floplike displacive transitions in perovskites
AU - Aharony, Amnon
AU - Bruce, Alastair D.
PY - 1974
Y1 - 1974
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=5844260175&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.33.427
DO - 10.1103/PhysRevLett.33.427
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AN - SCOPUS:5844260175
VL - 33
SP - 427
EP - 430
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 7
ER -