Patri Tirupathi, Satish Kumar Mandal, Amreesh Chandra
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引用次数: 2
Abstract
The importance of using divalent ion doped BiFeO3 ceramics in-place of pure BiFeO3 informing solid solutions with other ferroelectric materials is emphasized. The phase stability for the (1-y)Bi0.90Ca0.10FeO3-(y)PbTiO3 system in the complete composition range show occurrence of interesting structure modulations. The changes in the crystal unit cell also seem to have significant effects on the microscopic structure. The SEM studies indicate the formation of more than one type of grains in the system. Such coexistence of one type of grains is found to show relaxor type characteristics both in dielectric and magnetic properties. Suitable models are used to explain the origin of the observed bi-relaxor type characteristics. The low temperature ac-magnetic studies suggest stabilization of a predominant spin-glass type characteristics in samples with 0.30 < y < 0.50.
期刊介绍：
While ceramics have traditionally been admired for their mechanical, chemical and thermal stability, their unique electrical, optical and magnetic properties have become of increasing importance in many key technologies including communications, energy conversion and storage, electronics and automation. Electroceramics benefit greatly from their versatility in properties including:
-insulating to metallic and fast ion conductivity
-piezo-, ferro-, and pyro-electricity
-electro- and nonlinear optical properties
-feromagnetism.
When combined with thermal, mechanical, and chemical stability, these properties often render them the materials of choice.
The Journal of Electroceramics is dedicated to providing a forum of discussion cutting across issues in electrical, optical, and magnetic ceramics. Driven by the need for miniaturization, cost, and enhanced functionality, the field of electroceramics is growing rapidly in many new directions. The Journal encourages discussions of resultant trends concerning silicon-electroceramic integration, nanotechnology, ceramic-polymer composites, grain boundary and defect engineering, etc.
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