skip to main content

SciTech ConnectSciTech Connect

Title: Structural study and DC conductivity of vanadyl doped zinc lithium borate glasses

Glasses with composition xZnO⋅(30 − x)⋅Li{sub 2}O⋅70B{sub 2}O{sub 3} containing 2 mol% of V{sub 2}O{sub 5} (x = 0, 2, 5, 7 and 10) were prepared by standard melt-quench technique. The amorphous nature of the glass samples was confirmed by using x-ray diffraction. The structural changes in these glasses have been investigated by employing IR spectroscopy in the mid-IR range. The infrared spectroscopic analysis confirms the presence of both triangular and tetraheldral coordinated boron units and absence of boroxol ring. It also shows that metal-oxide vibrations are present which are due to the bonding of lithium and zinc ions with oxygen. The dc conductivity was measured in the temperature range 353-523 K. The dc conductivity results show that conductivity decreases and activation energy increases when Li{sub 2}O is replaced by ZnO, keeping the concentration of B{sub 2}O{sub 3} constant. Decrease in conductivity and increase in activation energy shows that addition of ZnO to the glass matrix shows a “blocking effect” on the overall mobility of alkali ions, but at higher concentration the hopping effect was also observed.
Authors:
 [1] ;  [2] ; ; ;  [1] ;  [3] ;  [4]
  1. Physics Department, Deenbandhu Chhotu Ram University of Science & Technology, Murthal-131039 (India)
  2. (India)
  3. Applied Physics Department, Guru Jambheshwar University of Science & Technology, Hisar-125001 (India)
  4. Physics Department, Baba Mast Nath University, Asthal Bohr, Rohtak-124001 (India)
Publication Date:
OSTI Identifier:
22490369
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ACTIVATION ENERGY; AMORPHOUS STATE; BORATES; BORON OXIDES; CHANNELING; CONCENTRATION RATIO; DOPED MATERIALS; ELECTRIC CONDUCTIVITY; GLASS; INFRARED SPECTRA; LITHIUM OXIDES; MATRIX MATERIALS; VANADIUM OXIDES; X-RAY DIFFRACTION; ZINC IONS; ZINC OXIDES