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- W1987150147 abstract "The electromechanical properties of lead magnesium niobate-lead titanate (PMN-PT) ceramics are of great interest to transducer designers. Typically, the strain versus electric field and polarization versus electric field curves used to obtain those properties are measured over a major loop, i.e., one with a large dc bias and large ac signal. However, many devices are designed to operate at lower fields that fall entirely within the major loop, i.e., in a minor loop. Since the electromechanical properties of PMN-PT are strong functions of the bias and drive levels, it is crucial to understand how well properties derived from the major loop measurement correspond to the actual minor loop properties. In this study, electromechanical measurements on PMN-PT corresponding to minor loops at varying dc bias, ac drive, mechanical prestress, and temperature levels were made. The equivalent piezoelectric constant, dielectric constant, and dielectric loss factor for these minor loops will be compared to the corresponding major loop parameters. It will be shown that, in many cases, the parameters derived from the major loop agree quite well with the directly measured minor loops. An attempt to establish the lower limit for extracting minor loop properties from major loop data will be made." @default.
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- W1987150147 date "2000-05-01" @default.
- W1987150147 modified "2023-09-25" @default.
- W1987150147 title "Comparison of minor to major loop properties in PMN‐PT ceramics" @default.
- W1987150147 doi "https://doi.org/10.1121/1.428935" @default.
- W1987150147 hasPublicationYear "2000" @default.
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