Electrical conductivity measurements on gel grown KDP crystals added with some ammonium compounds

Bulletin of materials science

T H Freeda¹  C Mahadevan¹ 

[1] Department of Physics, S.T. Hindu College, Nagercoil 629 002, India$$Department of Physics, S.T. Hindu College, Nagercoil 629 002, IndiaDepartment of Physics, S.T. Hindu College, Nagercoil 629 002, India$$

关键词: Impurity added KDP crystals;    gel method;    electrical conductivity;    activation energy.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Pure and impurity added [with NH₄Cl, NH₄NO₃, NH₄H₂PO₄, (NH₄)₂CO₃ and (NH₄)₂SO₄] KDP single crystals were grown by the gel method using silica gels. Electrical conductivity measurements were carried out along both the unique axis and perpendicular directions at various temperatures ranging from 28 to 140°C by the conventional two-probe method. The present study shows that the conductivity in KDP crystals, for all the five dopants considered, increases with the increase in impurity concentration and temperature. Activation energies were also determined and reported.

【 授权许可】

Unknown