Near the transition temperature, a thermal hysteresis was found in dielectric, pyroelectric and piezoelectric measurements. Thus the transition should be of the firstordertransition.
在相变温度区域里,介电、热电和压电都有明显的热滞效应,具有一级相变特性。
3
They discovered a firstorder phase transition, a discontinuity, in liquid hydrogen between a molecular state with low conductivity and a highly conductive atomic state.