EPR Monitoring of BaTiO<sub>3</sub> Formation

D.-Y. Lu; T. Ogata; H. Unuma; X.-B. Li; T. Kawai; X.-Y. Sun

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EPR Monitoring of BaTiO₃ Formation

机译：BaTiO _{3 形成的EPR监测}

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BaCO₃ and anatase-type TiO₂ were adopted as initial materials to prepare BaTiO₃ powder by the solid-state reaction method at a heating rate of 350°C/h. The electron paramagnetic resonance (EPR) technique was employed to monitor the formation of BaTiO₃. TiO₂ showed a series of complicated EPR signals associated primarily with Fe impurities. The formation of BaTiO₃ can be monitored in terms of the evolution of EPR signals associated with Fe impurities with calcination and measurement temperatures. The activation of the g = 2.004 signal above the Curie point of BaTiO₃ and the disappearance of the other EPR signals in the BaCO₃/TiO₂ mixture at room temperature are characteristic of the formation of BaTiO₃.

机译：以BaCO _{3 和锐钛矿型TiO _{2 为原料，通过固相反应法在升温速率下制备了BaTiO _{3 粉末。 350°C / h。采用电子顺磁共振（EPR）技术监测BaTiO _{3 的形成。 TiO _{2 表现出一系列主要与铁杂质有关的复杂EPR信号。 BaTiO _{3 的形成可以通过煅烧和测量温度下与铁杂质相关的EPR信号的演变来监测。在BaTiO _{3 的居里点以上的g = 2.004信号的激活和BaCO _{3 / TiO _{2 3 形成的特征。}}}}}}}}}

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《Applied Magnetic Resonance》 |2011年第2期|p.213-220|共8页
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D.-Y. Lu; T. Ogata; H. Unuma; X.-B. Li; T. Kawai; X.-Y. Sun;
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EPR Monitoring of BaTiO3 Formation

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EPR Monitoring of BaTiO₃ Formation