ELECTRICAL PROPERTIES OF THE (1-X) BNT-XBKT SYSTEM NEAR MORPHOTROPIC PHASE BOUNDARY

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MOOSAVI AZAM; BAHREVAR MOHAMMAD ALI; AGHAEI ALIREZA

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Journal: CERAMIC SCIENCE & ENGINEERING Year:2013 | Volume:2 | Issue:1 Page(s): 65-75

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Title

ELECTRICAL PROPERTIES OF THE (1-X) BNT-XBKT SYSTEM NEAR MORPHOTROPIC PHASE BOUNDARY

Author(s)

MOOSAVI AZAM | BAHREVAR MOHAMMAD ALI | AGHAEI ALIREZA | Issue Writer Certificate

Keywords

PIEZOELECTRICQ2

LEADQ3

FREEQ3

BNKTQ3

STRAINQ3

Abstract

Lead FREE Bi0.5 (Na1-xKx) 0.5TiO3 piezoceramics (BNKTx) with various amount of potassium (x=0.18, 0.20, 0.22 and 0.24) around morphotropic phase boundary (MPB) were prepared via a conventional solid state reaction. The crystal structure, electrical properties and STRAIN were significantly influenced by the amount of K+ substitution. The XRD patterns revealed that by increasing K+ amount the tetragonal phase increased as well as more K+ content resulted in the enhanced PIEZOELECTRIC properties, a large PIEZOELECTRIC constant d33=195 pC/N was obtained at x=0.20, however depolarization temperature (Td) reached to 100oC. The BNKTx ceramics exhibited high remnant polarization Pr=37.50 mC/cm2 of the MPB composition (x=0.20). The increase of K+ content destabilized the ferroelectric order of the BNKTx ceramics, LEADing to degradation of the remnant polarization, reduction of coercive field and changing the shape of hysteresis loop towards antiferroelectric phase. An outstanding large electric field induced STRAIN (S=0.13%) under 1 kV/mm and normalized STRAIN d33*=1320 pm/V were obtained at the MPB for x=0.20

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APA: Copy

MOOSAVI, AZAM, BAHREVAR, MOHAMMAD ALI, & AGHAEI, ALIREZA. (2013). ELECTRICAL PROPERTIES OF THE (1-X) BNT-XBKT SYSTEM NEAR MORPHOTROPIC PHASE BOUNDARY. CERAMIC SCIENCE & ENGINEERING, 2(1), 65-75. SID. https://sid.ir/paper/227920/en

Vancouver: Copy

MOOSAVI AZAM, BAHREVAR MOHAMMAD ALI, AGHAEI ALIREZA. ELECTRICAL PROPERTIES OF THE (1-X) BNT-XBKT SYSTEM NEAR MORPHOTROPIC PHASE BOUNDARY. CERAMIC SCIENCE & ENGINEERING[Internet]. 2013;2(1):65-75. Available from: https://sid.ir/paper/227920/en

IEEE: Copy

AZAM MOOSAVI, MOHAMMAD ALI BAHREVAR, and ALIREZA AGHAEI, “ELECTRICAL PROPERTIES OF THE (1-X) BNT-XBKT SYSTEM NEAR MORPHOTROPIC PHASE BOUNDARY,” CERAMIC SCIENCE & ENGINEERING, vol. 2, no. 1, pp. 65–75, 2013, [Online]. Available: https://sid.ir/paper/227920/en

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