| 两种TGS晶体在低温下的热电和介电性 |
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| 引用本文： | 李翠平,赵焕绥,房昌水,张沛霖,钟维烈,张磊. 两种TGS晶体在低温下的热电和介电性[J]. 山东大学学报(理学版), 1989, 0(1) |
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| 作者姓名： | 李翠平 赵焕绥 房昌水 张沛霖 钟维烈 张磊 |
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| 作者单位： | 山东大学实验中心，山东大学实验中心，山东大学晶体材料研究所，山东大学物理系，山东大学物理系，山东大学物理系 |
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| 摘 要： | 测量了TGS、ATGSP两种晶体在室温至20K温度范围内的介电常数K_(22)和热电系数p_2。这两种参数都随温度降低而单调下降,不显示相变的迹象。在此范围内的任一温度,ATGSP的热电系数p_2和优值p_2/K_(22)均较TGS的大。优值p_2/K_(22)随温度下降而减小,与自发极化的温度特性不相一致。
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| 关 键 词： | TGS晶体 ATGSP晶体 热电性 介电性 |
PYROELECTRIC AND DIELECTRIC PROPERTIES OF TWO CRYSTALS IN TGS SERIES AT LOW TEMPERATURES |
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| Li Cuiping,Zhao Huansui,Fang Changshui,Zhang Peilin,Zhong Weilie and Zhang Lei. PYROELECTRIC AND DIELECTRIC PROPERTIES OF TWO CRYSTALS IN TGS SERIES AT LOW TEMPERATURES[J]. Journal of Shandong University, 1989, 0(1) |
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| Authors: | Li Cuiping Zhao Huansui Fang Changshui Zhang Peilin Zhong Weilie Zhang Lei |
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| Abstract: | The dielectric constant K_(22) and pyroelectric coefficient p_2 of TGS and ATGSP have been measured in the temperature range from room temperature to 20K. Both of the two parameters decrease with decreasing temperature monotonically, showing no evidence of phase transition. At any temperature in this range, the pyroelectric coefficient p_2 and the figure of merit p_2/K_(22) of ATGSP are higher than those of TGS. The p_2/K_(22) decreases with decreasing temperature which is inconsistent with the temperature dependence of spontaneous polarization. |
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| Keywords: | TGS crystal ATGSP crystal pyroelectric propetie dielectric propertie |
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