Electrical Conduction in Deuterated Ammonium Dihydrogen Phosphate Crystals with Different Degrees of Deuteration

Conductivity measurements of deuterated ammonium dihydrogen phosphate （DADP） crystals with different deuterated degrees are described. The conductivities increase with the deuterium content, and the value of the a-direction is larger than that of the e-direction. Compared with DKDP crystals, DADP cr...

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Published inChinese physics letters Vol. 32; no. 5; pp. 107 - 110
Main Author 朱丽丽 甘笑雨 张清华 刘宝安 徐明霞 张立松 许心光 顾庆天 孙洵
Format Journal Article
LanguageEnglish
Published 01.05.2015
Subjects
Ammonium dihydrogen phosphate
Conductivity
Crystal defects
Crystals
Deuteration
Deuterium
DKDP
Mathematical analysis
Resistivity
交流电导率
晶体相
氘化
温度范围
电传导
电导率测量
磷酸二氢铵
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ISSN0256-307X
1741-3540
DOI10.1088/0256-307X/32/5/057201

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Summary:Conductivity measurements of deuterated ammonium dihydrogen phosphate （DADP） crystals with different deuterated degrees are described. The conductivities increase with the deuterium content, and the value of the a-direction is larger than that of the e-direction. Compared with DKDP crystals, DADP crystals have larger conductivities, which is partly due to the existence of A defects. The ac conductivity over the temperature range 25-170℃has shown a knee in the curve ofln（σT） versus T-1. The conductivity activation energy calculated by the slope of the high temperature region decreases with the deuterium content. The previously reported phase transition is not seen.
Bibliography:11-1959/O4
ZHU Li-Li, GAN Xiao-Yu, ZHANG Qing-Hua,LIU Bao-An, XU Ming-Xia, ZHANG Li-Song, XU Xin-Guang, GU Qing-Tian,SUN Xun（ 1State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100 2Key Laboratory of Functional Crystal Materials and Device of Ministry of Education, Shandong University, Jinan 250100 3 Chengdu Fine Optical Engineering Research Centre, Chengdu 610041）
Conductivity measurements of deuterated ammonium dihydrogen phosphate （DADP） crystals with different deuterated degrees are described. The conductivities increase with the deuterium content, and the value of the a-direction is larger than that of the e-direction. Compared with DKDP crystals, DADP crystals have larger conductivities, which is partly due to the existence of A defects. The ac conductivity over the temperature range 25-170℃has shown a knee in the curve ofln（σT） versus T-1. The conductivity activation energy calculated by the slope of the high temperature region decreases with the deuterium content. The previously reported phase transition is not seen.
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ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/32/5/057201