Structural, magnetic, dielectric and thermal analysis of gel grown pure and doped cadmium tartrate crystals
Хэвлэлийн нэр: Optik: International Journal for Light and Electron Optics Vol:125.
Хамтран зохиогч: V.Mathivanan, M.Haris* ,T. Prasanyaa, M.Senthilkumar
Хэвлүүлсэн огноо: 2014-09-18
Хуудас дугаар: 5153-5159
Pure and doped cadmium tartrate crystals
of different morphology have been synthesized. They were obtained using a gel technique.
The metallic composition of the crystals was estimated using energy dispersive x-ray
analysis (EDAX). The coloration of the crystals changed with
the type and composition of metallic content.
Fourier transform infrared
spectroscopy (FT-IR) suggested the presence of O-H, C=O, C-O and
metal-oxygen bonds. Powder x-ray diffraction (XRD) suggested the crystalline nature of
the material and indicated the changes in unit cell volume as doping occurred. The
unit cell volume for pure cadmium tartrate crystal was found to be 881.440 Å3,
for Cu2+ doped cadmium tartrate 811.885 Å3, for Fe2+
doped cadmium tartrate 767.486 Å3 and for Mg2+ doped
cadmium tartrate 788.481 Å3. The magnetic susceptibility and
magnetic moment for the crystals were determined by using the Gouy’s method.
The magnetic moment of pure cadmium tartrate, Cu2+ doped cadmium
tartrate, Fe2+ doped cadmium tartrate and Mg2+ doped cadmium
tartrate crystals was found to be 3.84 BM, 1.33 BM, 2.76 BM and 3.64 BM
respectively. Thermogravimetric (TG) analysis of pure and doped cadmium tartrate
crystals suggest the possibility of the presence of co-ordinated water
molecules in the crystalline structure. There are two stages of decomposition
for the materials. The first is a minor stage of decomposition, the second is the major stage of decomposition, which is
confirmed through differential scanning calorimetry (DSC). At the completion of
decomposition only metal oxide remains
for both pure and doped crystals. The addition of dopants into the pure cadmium
tartrate crystals has an appreciable effect on the dielectric properties such
as dielectric constant and dielectric loss of the crystal.
Өгүүллийн төрөл: Мэргэжлийн түвшинд хянагддаг сэтгүүл
Өгүүллийн зэрэглэл: Гадаад
#mixed tartrate crystals