Crystal Structure and Bonding Analysis of (La0.8Ca0.2)(Cr0.9−x Co0.1Cux)O3 Ceramics
-
N. Thenmozhi
,
R. Saravanan
Abstract
In this article, structural properties and bonding behaviours of codoped lanthanum chromites (La0.8Ca0.2)(Cr0.9−x Co0.1Cux)O3 (x=0.00, 0.03, and 0.12) were investigated in detail. Polycrystalline chromite samples (La0.8Ca0.2)(Cr0.9−x Co0.1Cux)O3 (x=0.00, 0.03, and 0.12) were prepared by a standard solid-state reaction process. The synthesised samples were characterised for their structural, morphological, optical, and magnetic properties using powder XRD, SEM/EDS, UV–Vis, and VSM. XRD data showed that the samples were crystallised into a single phase with orthorhombic structure. Powder profile refinement analysis suggested the reduction in lattice parameters and cell volume with the addition of Cu. The electron density distributions and the bonding features of the prepared samples have been investigated using maximum entropy method (MEM). The mid bond electron density values revealed the enhancement of ionic nature between lanthanum and oxygen ions and a reduction in covalent nature between chromium and oxygen ions. Heterogeneous distribution of particles with different sizes was observed through SEM micrographs. EDS spectra confirms the presence of constituent elements in the prepared samples. Optical band gap values are decreasing with the addition of Cu. Antiferromagnetic ordering was observed from M–H curves obtained at room temperature. The structural and the magnetic properties are correlated.
Acknowledgements
One of the authors N.T would like to thank UGC, Hyderabad, the authorities of NMSSVN College and The Madura College, Madurai, India, for the FDP programme of XII plan, the period in which this effective work was carried out. The authors would like to acknowledge Sophisticated Analytical Instrument Facility (SAIF), Cochin University, India, for their help in the collection of XRD data, UV–Visible spectra, and SEM/EDS spectra. The authors would also like to acknowledge SAIF, IIT Madras, Chennai, for the VSM measurements.
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©2017 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- On Type-II Bäcklund Transformation for the MKdV Hierarchy
- Elastic Properties and Electronic Structure of WS2 under Pressure from First-principles Calculations
- Study of Caking of Powders Using NQR Relaxometry with Inversion of the Laplace Transform
- Rogue Waves and Hybrid Solutions of the Boussinesq Equation
- Exact Solution for Capillary Bridges Properties by Shooting Method
- Structural, Electronic, and Mechanical Properties of CoN and NiN: An Ab Initio Study
- On the Heisenberg Supermagnet Model in (2+1)-Dimensions
- Breathers and Rogue Waves for the Fourth-Order Nonlinear Schrödinger Equation
- Study on the Spectrum of Photonic Crystal Cavity and Its Application in Measuring the Concentration of NaCl Solution
- Potential Systems and Nonlocal Conservation Laws of Prandtl Boundary Layer Equations on the Surface of a Sphere
- Density and Adiabatic Compressibility of the Immiscible Molten AgBr+LiCl Mixture
- Kaluza–Klein Bulk Viscous Fluid Cosmological Models and the Validity of the Second Law of Thermodynamics in f(R, T) Gravity
- Tungsten Sulfide Nanoflakes: Synthesis by Electrospinning and Their Gas Sensing Properties
- Crystal Structure and Bonding Analysis of (La0.8Ca0.2)(Cr0.9−x Co0.1Cux)O3 Ceramics
Artikel in diesem Heft
- Frontmatter
- On Type-II Bäcklund Transformation for the MKdV Hierarchy
- Elastic Properties and Electronic Structure of WS2 under Pressure from First-principles Calculations
- Study of Caking of Powders Using NQR Relaxometry with Inversion of the Laplace Transform
- Rogue Waves and Hybrid Solutions of the Boussinesq Equation
- Exact Solution for Capillary Bridges Properties by Shooting Method
- Structural, Electronic, and Mechanical Properties of CoN and NiN: An Ab Initio Study
- On the Heisenberg Supermagnet Model in (2+1)-Dimensions
- Breathers and Rogue Waves for the Fourth-Order Nonlinear Schrödinger Equation
- Study on the Spectrum of Photonic Crystal Cavity and Its Application in Measuring the Concentration of NaCl Solution
- Potential Systems and Nonlocal Conservation Laws of Prandtl Boundary Layer Equations on the Surface of a Sphere
- Density and Adiabatic Compressibility of the Immiscible Molten AgBr+LiCl Mixture
- Kaluza–Klein Bulk Viscous Fluid Cosmological Models and the Validity of the Second Law of Thermodynamics in f(R, T) Gravity
- Tungsten Sulfide Nanoflakes: Synthesis by Electrospinning and Their Gas Sensing Properties
- Crystal Structure and Bonding Analysis of (La0.8Ca0.2)(Cr0.9−x Co0.1Cux)O3 Ceramics
