Yongshen HU
,
Wen CHEN
,
Qing XU
,
Runzhang YUAN
材料科学技术（英文）
(PEO)(x)MoO3.nH(2)O(x=0 similar to2) nanocomposite films were prepared by ion exchange method and polymer solution direct intercalation in sol-gel route. The synthesis and structure of the films were investigated by XRD, DSC, FTIR, etc. The results show that MoO3 xerogel has a layered structure, which arranges in b-direction. The interlayer distance Of MoO3 xerogel increases from 0.690 nm at x=0 to 1.308 nm at x=2 after heat treatment. PEO can be completely intercalated into the interlayer at x=0.5 similar to1 and has strong interaction with MoO3 host.
关键词:
Qing XU
,
Wen CHEN
,
Duanping HUANG
,
Runzhang YUAN
材料科学技术（英文）
Doped SrTiO3 capacitor-varistor multifunctional ceramics were fabricated by a single sintering process. AC complex impedance analysis was performed to investigate electrical features of grains and grain boundaries for both as-reduced ceramic and reoxidized ceramics.The results showed that the as-reduced ceramic exhibited inductive response at high frequencies above 2 MHz, which is attributed to the contribution of electron behavior in semiconducting grains.The high frequency inductive response disappeared in impedance plots of reoxidized ceramics.
关键词:
Strontium titanate
,
null
,
null
,
null
