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자료유형
학술저널
저자정보
Maqbool, Adnan (School of Advanced Materials Engineering, Changwon National University) Hussain, Ali (School of Advanced Materials Engineering, Changwon National University) Malik, Rizwan Ahmed (School of Advanced Materials Engineering, Changwon National University) Zaman, Arif (School of Advanced Materials Engineering, Changwon National University) Song, Tae Kwon (School of Advanced Materials Engineering, Changwon National University) Kim, Won-Jeong (Department of Physics, Changwon National University) Kim, Myong-Ho (School of Advanced Materials Engineering, Changwon National University)
저널정보
한국재료학회 한국재료학회지 한국재료학회지 제25권 제7호
발행연도
2015.1
수록면
317 - 321 (5page)

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The effects of Nb doping on the crystal structure, microstructure, and dielectric ferroelectric and piezoelectric properties of $(Bi_{0.5}Na_{0.5})_{0.935}Ba_{0.065}Ti_{(1-x)}Nb_xO_3-0.01SrZrO_3$ (BNBTNb-SZ, with ${\chi}=0$, 0.01 and 0.02) ceramics have been investigated. X-ray diffraction patterns revealed that all ceramics have a pure perovskite structure with tetragonal symmetry. The grain size of the ceramics slightly decreased and a change in grain morphology from square to spherical shape was observed in the Nb-doped samples. The maximum dielectric constant temperature ($T_m$) increases with increasing amount of Nb; however, ferroelectric-relaxor transition temperature ($T_{F-R}$) and maximum dielectric constant (${\varepsilon}_m$) values decrease gradually. Nb addition disrupted the polarization hysteresis loops of the BNBT-SZ ceramics by leading a reduction in the remnant polarization coercive field and piezoelectric constant.

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