Electrical and electrochemical properties of nanostructured Ni and Zn substituted Co3O4 spinels for thermistors and supercapacitor applications

K Samatha, H Vijeth, R Sagar - Journal of Energy Storage, 2022 - Elsevier
Cobalt oxide-based spinels in the form of Co 3 O 4, NiCo 2 O 4 and ZnCo 2 O 4 are
synthesized by the co-precipitation technique. Powder X-ray diffraction studies confirm the …

Highly dense Mn3O4 and CuMn2O4 spinels as efficient protective coatings on solid oxide fuel cell interconnect and their chromium diffusion studies

N Acharya, U Chaitra, H Vijeth, R Sagar - Journal of Alloys and Compounds, 2022 - Elsevier
In this study, we report Mn 3 O 4 and CuMn 2 O 4 spinels as potential protective coating
materials on metallic solid oxide fuel cell (SOFC) interconnect SUS430 and their ability to …

Complex impedance and modulus studies of cerium doped barium zirconium titanate solid solution

R Sagar, RL Raibagkar - Journal of alloys and compounds, 2013 - Elsevier
Nanocrystalline powders of (Ba1− xCex)(Zr0. 52Ti0. 48) O3 [x= 0.1 and 0.2] have been
synthesized by conventional solid state reaction method. X-ray diffraction patterns confirm …

CoMn2O4 and Cu0. 5Co0. 5Mn2O4 spinels as efficient protective coating layers on SUS430 for SOFC interconnect

N Acharya, R Sagar - Ceramics International, 2023 - Elsevier
In this study, CoMn 2 O 4 and Cu 0.5 Co 0.5 Mn 2 O 4 spinels are examined as protective
coatings for chromium diffusion in metallic interconnect of solid oxide fuel cell. Both spinels …

Local electronic structure, optical bandgap and photoluminescence (PL) properties of Ba (Zr0. 75Ti0. 25) O3 powders

LS Cavalcante, NC Batista, T Badapanda… - Materials Science in …, 2013 - Elsevier
Ba (Zr0. 75Ti0. 25) O3 (BZT-75/25) powders were synthesized by the polymeric precursor
method. Samples were structurally characterized by X-ray diffraction (XRD), Rietveld …

Electrical and electrochemical characterization of FeCo2O4 nanoflakes for flexible supercapacitor applications

K Samatha, R Sagar - Bulletin of Materials Science, 2024 - Springer
Iron-substituted cobalt oxide spinel in the form of FeCo2O4 nanoflakes was synthesized by
using a wet-chemical co-precipitation process. The presence of a metal-oxide bond was …

Effect of neodymium do** in BaTiO3 ceramics on structural and ferroelectric properties

S Sasikumar, TK Thirumalaisamy… - Journal of Materials …, 2020 - Springer
In this work, single-phase perovskite Ba 1− x Nd x TiO 3 (x= 0.00, 0.02, 0.04, 0.06, 0.08)
ceramic solid solutions were synthesized via solid-state sintering process. Powder X-ray …

Electrical properties and microwave dielectric behavior of holmium substituted barium zirconium titanate ceramics

R Sagar, P Hudge, S Madolappa… - Journal of alloys and …, 2012 - Elsevier
Structural, microwave dielectric and electrical properties of (Ba1− xHox)(Zr0. 52Ti0. 48) O3
with the mole fraction of x= 0.1 and 0.2 have been investigated. The results obtained from …

Synthesis, structure and electrical studies of praseodymium doped barium zirconium titanate

R Sagar, S Madolappa, N Sharanappa… - Materials Chemistry and …, 2013 - Elsevier
Praseodymium (Pr) doped barium zirconium titanate with nominal composition (Ba1−
xPrx)(Zr0. 52Ti0. 48) O3 (x= 0.1 and 0.2) were synthesized using solid state reaction …

High specific capacitance and NTC behavior of substituted cobalt oxide spinels for electrochemical supercapacitor and thermistor applications

K Samatha, R Sagar - Inorganic Chemistry Communications, 2024 - Elsevier
Due to the growing importance of low-cost energy storage devices in smart device
applications, finding an appropriate electrode material with the least self-discharging, high …