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Title: Thermal properties of Ni-substituted LaCoO{sub 3} perovskite

With the objective of exploring the unknown thermodynamic behavior of LaCo{sub 1−x}Ni{sub x}O{sub 3} family, we present here an investigation of the temperature-dependent (10K ≤ T ≤ 300K) thermodynamic properties of LaCo{sub 1−x}Ni{sub x}O{sub 3} (x=0.1, 0.3, 0.5). The specific heat of LaCoO3 with Ni doping in the perovskite structure at B-site has been studied by means of a Modified Rigid Ion Model (MRIM). This replacement introduces large cation variance at B-site hence the specific heat increases appreciably. We report here probably for the first time the cohesive energy, Reststrahlen frequency (υ) and Debye temperature (θ{sub D}) of LaCo{sub 1−x}Ni{sub x}O{sub 3} compounds.
Authors:
; ;  [1] ;  [2]
  1. Department of Physics, Barkatullah University, Bhopal - 462026 (India)
  2. Department of Physics, Sri Sathya Sai College for Women, Bhopal- 462024 (India)
Publication Date:
OSTI Identifier:
22269371
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1591; Journal Issue: 1; Conference: 58. DAE solid state physics symposium 2013, Patiala, Punjab (India), 17-21 Dec 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CATIONS; DEBYE TEMPERATURE; PEROVSKITE; SPECIFIC HEAT; TEMPERATURE DEPENDENCE