| Tb4O7掺杂的WO3陶瓷的高温热电现象 |
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| 引用本文： | 羊新胜,陈 敏,王 豫. Tb4O7掺杂的WO3陶瓷的高温热电现象[J]. 物理学报, 2003, 52(6): 1545-1548 |
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| 作者姓名： | 羊新胜 陈 敏 王 豫 |
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| 作者单位： | 华中科技大学物理系,武汉 430074 |
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| 基金项目： | 国家自然科学基金(批准号:19972010)资助的课题. |
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| 摘 要： | 采用传统的固相烧结技术，制备Tb4O7掺杂的WO3陶瓷. 测量了其高温热电行为，发现样品升温和降温时相变分别出现在350℃和270℃，有80℃的热滞.并且样品在500℃的恒定温度下有稳定的电能输出，这种现象用现有的温差电效应和热(释)电效应理论都不能解释.这是一种新的热电效应，利用它有可能找到热能—电能转换的新途径.关键词：3陶瓷')" href="#">WO3陶瓷热电转换相变热释电
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| 关 键 词： | WO3陶瓷 热电转换 相变 热释电 |
| 文章编号： | 1000-3290/2003/52(06)/1545-04 |
| 收稿时间： | 2002-09-16 |
| 修稿时间： | 2002-09-16 |
High temperature heat-electric phenomenon of Tb4O7 doped W O3 ceramics |
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| Yang Xin-Sheng,Chen Min and Wang Yu. High temperature heat-electric phenomenon of Tb4O7 doped W O3 ceramics[J]. Acta Physica Sinica, 2003, 52(6): 1545-1548 |
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| Authors: | Yang Xin-Sheng Chen Min Wang Yu |
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| Abstract: | Heat-electric properties at high temperatures were measured on tungsten trioxide (WO3) ceramics doped with Tb4O7 prepared by c onventional solid-sintering method. The results indicated that a phase transition occurred at 350℃ on heating and 270℃ on cooling with a large thermal hysteresis of about 80℃. And the samples can provide an electric energy output at a constant temperature of 500℃, which cannot be explained by the known thermoelectric or pyroelectric effect. We regard it as a new heat-electric effect, by which a new way of converting heat energy to electric energy may be found. |
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| Keywords: | WO3 ceramic thermoelectric conversion phase transition pyroelectricity |
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