Dependence of coercive field of PIN-PMN-PT single crystal on temperature and frequency

摘要

The effective coercive field E(c)(eff & nbsp;)of [001](c) oriented 0.24Pb(In1/2Nb1/2)O-3-0.45Pb(Mg1/3Nb2/3)O-3-0.31PbTiO(3)(PIN-PMN-PT) single crystals has been investigated as a function of temperature T and frequency f. The results show that the & nbsp;E-c(eff)& nbsp;& nbsp;vs f curve exhibits two different regimes separated at about 400 kHz, which may be attributed to the relaxation of non-180 degrees domain switching. It is found that E-c(eff)& nbsp;linearly decreases with T at any given frequency but increases with frequency at a given temperature. These quantitative results demonstrate that the PIN-PMN-PT single crystals have good thermal stability and can be operated at a field level much beyond the conventional coercive field, revealing a great potential for high-frequency ultrasonic transducer applications. Published under an exclusive license by AIP Publishing.

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