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首页> 外文期刊>Physica status solidi, B. Basic research >Electromagnetic fields induced by a concentrated heat source in multiferroic materials
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Electromagnetic fields induced by a concentrated heat source in multiferroic materials

机译：多铁材料中集中热源感应的电磁场

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摘要

Pyroelectric and pyromagnetic effects are important for applications of multiferroic materials in elevated temperature environments. In this paper, we derive exact closed-form electromagnetic Green's function expressions for polarization fields in uniaxial multiferroic materials and bimaterials induced by a steady point heat source. The pyroelectric and pyromagnetic effects as a result of temperature change in multiferroic materials are incorporated in this study. The degenerate and nondegenerate cases, which pertain to whether the heat conduction characteristic constant is equal to one of the two electromagnetic characteristic constants, are discussed in detail. The Green's functions for a bimaterial composed of two perfectly bonded uniaxial multiferroic half-spaces subjected to a point heat source are further obtained by means of the image method.
机译：热电和热磁效应对于高温环境下多铁材料的应用很重要。在本文中，我们导出了由定点热源引起的单轴多铁性材料和双材料中极化场的精确封闭形式电磁格林函数表达式。由于在多铁性材料中温度变化而产生的热电和热磁效应被纳入本研究。详细讨论了与导热特性常数是否等于两个电磁特性常数之一有关的简并情况和非简并情况。通过成像方法进一步获得了由两个完全粘合的单轴多铁性半空间组成的双材料的格林函数，这些半空间受到点热源的影响。

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