کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9781743 | 1511636 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Single crystal EPR investigation on Mn(II) doped biomineral: cobalt potassium phosphate hexahydrate
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
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چکیده انگلیسی
Single crystal EPR study of Mn(II) doped in cobalt potassium phosphate hexahydrate has been carried out at room temperature. The impurity shows a 30 line pattern EPR spectra along a particular crystallographic axis suggesting the existence of only one type of impurity in place of Co(II) ion in the host lattice. The spin Hamiltonian parameters have been estimated as: g11=2.011, g22=1.998, g33=1.991, and A11=â8.9, A22=â8.8, A33=â8.4Â mT and D11=â15.2, D22=â9.4, D33=24.6Â mT, respectively. The sign of A is designated as negative and D as positive. The covalency of metal-oxygen bond has been estimated. The relaxation times, calculated as a function of temperature, indicate spin-lattice relaxation narrowing at room temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Physics and Chemistry of Solids - Volume 66, Issue 5, May 2005, Pages 876-881
Journal: Journal of Physics and Chemistry of Solids - Volume 66, Issue 5, May 2005, Pages 876-881
نویسندگان
K. Velavan, R. Venkatesan, P. Sambasiva Rao,