Effects of grain size on the dielectric behavior of layered perovskite SrBi4Ti4O15 ferroelectric ceramics
β Scribed by Zhijun Xu; Ruiqing Chu; Jigong Hao; Yanjie Zhang; Guorong Li; Qingrui Yin
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 229 KB
- Volume
- 404
- Category
- Article
- ISSN
- 0921-4526
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π SIMILAR VOLUMES
Rietveld refinement of powder neutron diffraction data has been used to study the crystal structures of the four-layer Aurivillius-phase ferroelectrics Bi 5 Ti 3 FeO 15 (at 251C) and SrBi 4 Ti 4 O 15 (at a series of temperatures up to 8001C). At 251C both materials adopt the polar orthorhombic space
The effect of the partial substitution of Mn with Fe in the layered perovskites (x 0.2) La 1.4 Ca 1.6 Mn 2Β± Β±x Fe x O 7 has been studied. The results show that conduction and ferromagnetism have been consistently suppressed by Fe doping. The colossal magnetoresistance is enhanced by Fe doping in som