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|Title:||Overpoling-induced property degradation in Pb (Mg 1/3Nb 2/3)O 3-PbTiO 3 single crystals of near-morphotropic phase boundary compositions||Authors:||Shanthi, M.
|Issue Date:||27-Jun-2005||Citation:||Shanthi, M., Hoe, K.H., Lim, C.Y.H., Lim, L.C. (2005-06-27). Overpoling-induced property degradation in Pb (Mg 1/3Nb 2/3)O 3-PbTiO 3 single crystals of near-morphotropic phase boundary compositions. Applied Physics Letters 86 (26) : 1-3. ScholarBank@NUS Repository. https://doi.org/10.1063/1.1957114||Abstract:||Overpoling phenomenon has been observed in flux-grown Pb (Mg13 Nb23) O3 - (31-32) %PbTi O3 single crystals when poled above 0.4 kVmm at room temperature. This leads to increased property variations at intermediate poling fields (0.6-0.8 kVmm) and to the degradation of piezoelectric properties at high poling fields (≤1.0 kVmm). In comparison, both PMN-28%PT and PMN-30%PT crystal compositions are resistant to overpoling, of which PMN-30%PT exhibits superior dielectric and piezoelectric properties with KT ≈7500-9000, d33 ≈2200-2500 pCN, and d31 ≈1100-1400 pCN. The electromechanical coupling factors (k33 =0.90-0.94; k31 =0.48-0.55, and kt =0.58-0.62) are relatively insensitive to the poling field and crystal composition. © 2005 American Institute of Physics.||Source Title:||Applied Physics Letters||URI:||http://scholarbank.nus.edu.sg/handle/10635/85530||ISSN:||00036951||DOI:||10.1063/1.1957114|
|Appears in Collections:||Staff Publications|
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