کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1815719 1025670 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Crystal structure and EPR of the RbNd(WO4)2 single crystal
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Crystal structure and EPR of the RbNd(WO4)2 single crystal
چکیده انگلیسی

Crystal structure and EPR spectra in a RbNd(WO4)2 single crystal have been studied. RbNd(WO4)2 crystallizes in the monoclinic structure with the unit cell parameters: a=10.792(2)Å, b=10.673(2)Å, c=7.6703(15)Å, β=130.51(3)°β=130.51(3)°. Using the X-ray diffraction measurements, the fractional atomic coordinates, displacement parameters and interatomic distances have been determined. The EPR spectra are described in terms of the main g-tensor values: gz=3.291±0.005gz=3.291±0.005, gx=0.726±0.005gx=0.726±0.005, gy=1.533±0.005gy=1.533±0.005. Both the magnetic dipole–dipole and isotropic exchange interactions have been calculated. The exchange interactions are shown to exceed the magnetic dipole–dipole interactions and to have an opposite sign. These results suggest an appeareance of an antiferromagnetic ordering in RbNd(WO4)2 at low temperatures.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 371, Issue 2, 31 January 2006, Pages 205–209
نویسندگان
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