首页> 外文期刊>CERAMICS INTERNATIONAL >Structural and electrical properties of 0.56Pb(Ni_(1/3)Nb_(2/3))O_3-0.10Pb(Zn_(1/3)Nb_(2/3))O_3-0.34PbTiO_3 ceramics prepared by different ceramic processings
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Structural and electrical properties of 0.56Pb(Ni_(1/3)Nb_(2/3))O_3-0.10Pb(Zn_(1/3)Nb_(2/3))O_3-0.34PbTiO_3 ceramics prepared by different ceramic processings

机译:通过不同陶瓷工艺制备的0.56Pb(Ni_(1/3)Nb_(2/3))O_3-0.10Pb(Zn_(1/3)Nb_(2/3))O_3-0.34PbTiO_3陶瓷的结构和电性能

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摘要

The ternary system of 0.56Pb(Ni_(1/3)Nb_(2/3))O_3-0.10Pb(Zn_(1/3)Nb_(2/3))O_3-0.34PbTiO_3 (0.56PNN-0.10PZN-0.34PT) ceramics were prepared by conventional solid-state reaction method via straight mixed oxide method, columbite precursor method and B-site oxide mixing route. X-ray diffraction (XRD) measurement demonstrated that both the tetragonal and rhombohedral phases coexist in the B-site oxide mixing route prepared ceramics accompanied by the largest content of perovskite phase of 95.18%. The 0.56PNN-0.10PZN-0.34PT ceramics prepared by the straight mixed oxide method and the B-site oxide mixing route exhibit rather homogeneous microstructure. As a comparison, in the columbite precursor method prepared ceramics nebulous granules and octahedral or other polyhedral morphology grains are observed. All the sintered ceramics exhibit diffused ferroelectric phase transition where the dielectric response peaks are broad, diffused and strongly frequency dependent.
机译:0.56Pb(Ni_(1/3)Nb_(2/3))O_3-0.10Pb(Zn_(1/3)Nb_(2/3))O_3-0.34PbTiO_3(0.56PNN-0.10PZN-0.34)的三元体系PT)陶瓷是通过常规的固态反应方法,通过直接混合氧化物法、,钴前体法和B-位氧化物混合途径制备的。 X射线衍射(XRD)测量表明,在B位氧化物混合路径中制备的陶瓷中,四方相和菱面体相共存,钙钛矿相的含量最高,为95.18%。通过直接混合氧化物法和B位氧化物混合途径制备的0.56PNN-0.10PZN-0.34PT陶瓷表现出相当均匀的微观结构。作为比较,在哥伦比前体方法中,观察到制备的陶瓷雾状颗粒和八面体或其他多面体形态的晶粒。所有的烧结陶瓷均表现出弥散的铁电相变,其中介电响应峰宽,弥散且与频率密切相关。

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