Abstract
Abstract The effect of uniaxial pressure on hysteresis loops of DTGS single crystals was investigated up to 1 kbar, approximately. The coefficients ∂ i δT C δX i for the X, Y and Z directions are established, and are equal to -3.5, -8.2 and 12.7 °C/kbar, respectively. It has been found that the coefficient of the fourth power, ξ, is not pressure and temperature dependent. A scaled representation of data P /(|1- X X c |) 1 2 vs E/(|1- X X c |) 3 2 shows typical Landau behaviour analogous to that of an ordinary phase transition with P= P(E,X) instead of P= P(E,T).
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