influence of mno₂ additions to band₂ti₄o₁₂ microwave ceramics on sintering behavior and dielectric properties
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2016
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Abstract
The sintering behaviors and microwave dielectric properties of BaNd₂Ti₄O₁₂ (BNT4) ceramics with x wt.% MnO₂ dopants (x=0, 1, 2, 3 and 4) were investigated in this paper. The tungsten-bronze type BaNd₂Ti₄O₁₂ accompanied with a certain amount of Ba₂Ti₉O₂₀ secondary phase was observed for all Mn doped compositions when samples were sintered at 1300°C. Manganese substitution for Ti caused a decrease of the lattice parameters, and the addition of MnO₂ effectively improved the densification and lowered the sintering temperature of ceramics, which was closely related to the liquid phase sintering mechanism. The microstructure was homogeneous fine grained when x equaled to 3. At last, the BNT4 with 3.0 wt.% MnO₂ dopants well-sintered at 1300°C for 1h had good microwave dielectric properties of ɛr=90.2，Qxf=5225GHz and τf=9.7 ppm/°C.
| Reference Key |
fang2016ceramics-siliktyinfluence
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| Authors | ;Zi-xuan Fang;Bin Tang;Long Ming-Zhu;Zhang Shu-ren |
| Journal | european journal of organic chemistry |
| Year | 2016 |
| DOI |
10.13168/cs.2016.0018
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