Please use this identifier to cite or link to this item:
Title: Growth kinematics and characterization of rare earth mixed crystals in Silica Gel
Researcher: Kuryan, Soosy
Guide(s): Issac, Jayakumari
Keywords: Electric conductivity
Gel method
X-ray analysis
Infrared analysis
Thermal analysis
Upload Date: 28-Feb-2013
University: Mahatma Gandhi University
Completed Date: November 2007
Abstract: Well-characterized crystals are the building blocks of the modern science. Recent investigations on the fluorescence of some rare earth oxalates suggest their potentiality for their optical applications. Rare earth oxalates evoked greater attention because of their ionic conduction. Synthesis of superconducting compounds by the controlled precipitation of oxalates followed by calcinations had been reported. The ferroelectric and ferroelastic properties of rare earth molybdates and oxalates find application in electro and acousto optical devices. Yttrium Oxalate crystals, Yttrium Barium Oxalate crystals, Yttrium Copper Oxalate crystals, Yttrium Barium Copper Oxalate crystals, Praseodymium Barium Copper Oxalate crystals, Neodymium Barium Copper Oxalate crystals, Gadolinium Barium Copper Oxalate crystals and Dysprosium Barium Copper Oxalate crystals were grown by gel method. The grown crystals were characterized by X-ray analysis, Infrared analysis, Thermal analysis, DSC, ICP AES, EDAX and Microhardness. The electrical conductivity of rare earth mixed oxalate crystals was found to increase with increase of frequency and temperature. Rare earth mixed grown crystals showed negative photoconducting nature. From the microwave studies it had been observed that the rare earth mixed oxalate crystals grown exhibit considerable dielectric loss. So the rare earth mixed oxalate crystals can be used for the preparation of microwave absorbing materials for electro magnetic shielding.
Pagination: 212p.
Appears in Departments:School of Pure and Applied Physics

Files in This Item:
File Description SizeFormat 
01_title.pdfAttached File114.47 kBAdobe PDFView/Open
02_certificates.pdf638.71 kBAdobe PDFView/Open
03_declaration.pdf112.52 kBAdobe PDFView/Open
04_acknowledgements.pdf98.7 kBAdobe PDFView/Open
05_preface.pdf84.19 kBAdobe PDFView/Open
06_publications.pdf121.32 kBAdobe PDFView/Open
07_abstract.pdf91.37 kBAdobe PDFView/Open
08_contents.pdf98.16 kBAdobe PDFView/Open
09_list of figures.pdf109.82 kBAdobe PDFView/Open
10_list of tables.pdf75.9 kBAdobe PDFView/Open
11_chapter 1.pdf6.14 MBAdobe PDFView/Open
12_chapter 2.pdf3.88 MBAdobe PDFView/Open
13_chapter 3.pdf420.89 kBAdobe PDFView/Open
14_chapter 4.pdf434.6 kBAdobe PDFView/Open
15_chapter 5.pdf7.01 MBAdobe PDFView/Open
16_chapter 6.pdf262.17 kBAdobe PDFView/Open
17_chapter 7.pdf1.09 MBAdobe PDFView/Open
18_chapter 8.pdf1.03 MBAdobe PDFView/Open
19_chapter 9.pdf205.04 kBAdobe PDFView/Open

Items in Shodhganga are protected by copyright, with all rights reserved, unless otherwise indicated.