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Browsing Ranjan Datta by Subject "Applied Physics"

Now showing items 1-12 of 12

Crystallographic phase separation and band gap of ZnO1-xSx (x=0.1-0.3) alloy thin films grown by pulsed laser deposition

Dileep, K.; Sahu, R.; Nagaraja, K. K.; Datta, Ranjan (Elsevier Science Bv, 2014)

Crystallographic phase separation and optical properties of ZnO1-xSx (x=0.1-0.3) alloy thin films grown by pulsed laser deposition (PLD) on c-plane sapphire substrate have been investigated with and without using ZnO buffer ...
Direct evidence of strong local ferroelectric ordering in a thermoelectric semiconductor

Aggarwal, Leena; Sekhon, Jagmeet S.; Guin, Satya N.; Arora, Ashima; Negi, Devendra S.; Datta, Ranjan; Biswas, Kanishka; Sheett, Goutam (American Institute of Physics, 2014)

It is thought that the proposed new family of multi-functional materials, namely, the ferroelectric thermoelectrics may exhibit enhanced functionalities due to the coupling of the thermoelectric parameters with ferroelectric ...
Epitaxial Co metal thin film grown by pulsed laser deposition using oxide target

Negi, D. S.; Roy, A.; Loukya, B.; Dileep, K.; Shetty, S.; Kumar, N.; Kumar, P. S. Anil; Datta, Ranjan (Elsevier Science Bv, 2014)

We report here the growth of epitaxial Co metal thin film on c-plane sapphire by pulsed laser deposition (RD) using Co:ZnO target utilizing the composition inhomogeneity of the corresponding plasma. Two distinct plasma ...
Epitaxial growth of spinel cobalt ferrite films on MgAl2O4 substrates by direct liquid injection chemical vapor deposition

Shen, Liming; Althammer, Matthias; Pachauri, Neha; Loukya, B.; Datta, Ranjan; Iliev, Milko; Bao, Ningzhong; Gupta, Arunava (Elsevier Science Bv, 2014)

The direct liquid injection chemical vapor deposition (DLI-CVD) technique has been used for the growth of cobalt ferrite (CFO) films on (100) oriented MgAl2O4 (MAO) substrates. Smooth and highly epitaxial cobalt ferrite ...
Mechanochemical Synthesis of Free-Standing Platinum Nanosheets and Their Electrocatalytic Properties

Chhetri, Manjeet; Rana, Moumita; Loukya, B.; Patil, Pramod K.; Datta, Ranjan; Gautam, Ujjal K. (Wiley-V C H Verlag Gmbh, 2015)

Robust, 26 nm thick free-standing platinum nanosheets, an extremely rare morphology for metal nanostructures, are obtained by employing fluid induced shearing force of the order of 1.8 N and differential shear-stress of ...
Native defect induced charge and ferromagnetic spin ordering and coexisting electronic phases in CoO epitaxial thin film

Negi, D. S.; Loukya, B.; Datta, Ranjan (American Institute of Physics, )

We report on the observation of Co vacancy (VCo) induced charge ordering and ferromagnetism in CoO epitaxial thin film. The ordering is associated with the coexistence of commensurate, incommensurate, and discommensurate ...
Native defects affecting the Li atom distribution tune the optical emission of ZnO:Li epitaxial thin film

Sahu, R.; Dileep, K.; Loukya, B.; Datta, Ranjan (American Institute of Physics, 2014)

It is found that the oxygen vacancy (V-O) defect concentration affecting the separation between individual species in Li-Zn-Li-i complex influences the optical emission property of Li0.06Zn0.94O epitaxial thin film grown ...
Probing optical band gaps at nanoscale from tetrahedral cation vacancy defects and variation of cation ordering in NiCo2O4 epitaxial thin films

Dileep, K.; Loukya, B.; Silwal, P.; Gupta, A.; Datta, Ranjan (IoP Publishing Ltd, 2014)

High resolution electron energy loss spectroscopy (HREELS) is utilized to probe the optical band gaps at the nanoscale in epitaxial NiCo2O4 (NCO) thin films with different structural order (cation/charge). The structure ...
Probing optical band gaps at the nanoscale in NiFe2O4 and CoFe2O4 epitaxial films by high resolution electron energy loss spectroscopy

Dileep, K.; Loukya, B.; Pachauri, N.; Gupta, A.; Datta, Ranjan (American Institute of Physics, 2014)

Nanoscale optical band gap variations in epitaxial thin films of two different spinel ferrites, i. e., NiFe2O4 (NFO) and CoFe2O4 (CFO), have been investigated by spatially resolved high resolution electron energy loss ...
Spatially resolved quantitative magnetic order measurement in spinel CuCr2S4 nanocrystals

Negi, D. S.; Loukya, B.; Ramasamy, K.; Gupta, A.; Datta, Ranjan (American Institute of Physics, 2015)

We have utilized spatially resolved high resolution electron energy loss spectroscopy to quantify the relative percentage of ferromagnetic order in the core and the surface regions of CuCr2S4 nanoparticles with nanocube ...
Structural and optical property characterization of epitaxial ZnO:Te thin films grown by pulsed laser deposition

Sahu, R.; Dileep, K.; Negi, D. S.; Nagaraja, K. K.; Shetty, S.; Datta, Ranjan (Elsevier Science Bv, )

We have investigated the Te atom incorporation, solubility, structural features and the corresponding optical property of epitaxial ZnO:Te thin film grown on c-plane sapphire by pulsed laser deposition. Incorporation of ...
Study of structural and ferromagnetic resonance properties of spinel lithium ferrite (LiFe5O8) single crystals

Pachauri, Neha; Khodadadi, Behrouz; Althammer, Matthias; Singh, Amit V.; Loukya, B.; Datta, Ranjan; Iliev, Milko; Bezmaternykh, Leonard; Gudim, Irina; Mewes, Tim; Gupta, Arunava (American Institute of Physics, 2015)

The effect of B-site cation ordering on the room temperature structural and ferromagnetic resonance (FMR) properties of single crystal spinel lithium ferrite (LiFe5O8, LFO) have been investigated. A detailed microstructural ...

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