Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7887322 | Ceramics International | 2018 | 37 Pages |
Abstract
In this research, the effects of La0.7Sr0.3MnO3 additive on the phase evolution, microstructure, dielectric, ferroelectric and magnetic properties of BaZr0.07Ti0.93O3 ceramics were systematically investigated. The (BaZr0.07Ti0.93O3)/x(La0.7Sr0.3MnO3) or BZT/xLSM (where xâ¯=â¯0, 5, 10 and 20â¯mol%) ceramics were prepared via a solid state reaction method. A pure perovskite phase is observed for the samples of xâ¯â¤â¯10â¯mol%. The M-H hysteresis loops also show an improvement in the magnetic behavior for higher LSM content samples as well as the modified ferroelectric properties. However, the 5â¯mol% sample exhibited the optimum ferroelectric and ferromagnetic properties with remnant magnetization (Mr) and remanent polarization (Pr) of 2.38â¯emu/g and 10.5â¯ÂµC/cm2, respectively. The dielectric-temperature curves show that the two phase-transition temperatures as observed for the unmodified BZT ceramic merges into a single phase-transition temperature for the 5â¯mol% sample and then become flat curves for the 10â¯mol% sample. In addition, the mechanical properties i.e. Knoop hardness and Young's modulus values increase with increasing LSM content, where Knoop hardness and Young's modulus values for the 20â¯mol% sample are increased by ~ 45% and ~ 104%, respectively, as compared to the unmodified sample.
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Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Pakpoom Jarupoom, Pharatree Jaita, Ratabongkot Sanjoom, Chamnan Randorn, Gobwute Rujijanagul,