• Tuning the Oxygen Release Temperature of Metal Peroxides over a Wide Range by Formation of Solid Solutions 

  Lingampalli, S. R.; Dileep, K.; Datta, Ranjan; Gautam, Ujjal K. (American Chemical Society, 2014)

  Metal peroxides, with a labile peroxy bond, constitute a distinct class of inorganic compounds that can generate singlet oxygen species and works as versatile reagents in many important industrial processes such as in ...
• Nanostructuring, carrier engineering and bond anharmonicity synergistically boost the thermoelectric performance of p-type AgSbSe2-ZnSe 

  Guin, Satya N.; Negi, Devendra S.; Datta, Ranjan; Biswas, Kanishka (Royal Society of Chemistry, 2014)

  Thermoelectric "waste heat-to-electrical energy" generation is an efficient and attractive option for robust and environmentally friendly renewable energy production. Simultaneous tailoring of interdependent thermoelectric ...
• 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 ...
• Phase separation and electronic structure of ZnS0.3O0.7 alloy thin film with and without (Ag, Li) co-doping 

  Dileep, K.; Datta, Ranjan (Elsevier Science Sa, 2014)

  ZnS0.3O0.7 alloy thin film with and without Ag and Li co-doping are grown by pulsed laser deposition on c-plane sapphire substrate. The films are phase separated in S-rich and S-poor regions. Two and four different phases ...
• 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 ...
• 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 ...
• Structural and magnetic characterization of mixed valence Co(II, III)(x)Zn1-xO epitaxial thin films 

  Negi, D. S.; Loukya, B.; Dileep, K.; Sahu, R.; Shetty, S.; Kumar, N.; Ghatak, J.; Pachauri, N.; Gupta, A.; Datta, Ranjan (Elsevier Science Bv, 2014)

  In this article, we report on the Co atom incorporation, secondary phase formation and composition dependent magnetic and optical properties of mixed valence Co(II, III)(x)Zn1-xO epitaxial thin films grown by pulsed laser ...
• Deformation and strength of Ti-6Al-4V alloyed with B at cryogenic temperatures 

  Singh, Gaurav; Bajargan, Govind; Datta, Ranjan; Ramamurty, Upadrasta (Elsevier Science Sa, 2014)

  Plastic deformation and strength of Ti-6Al-4V (Ti64) alloyed with minor additions of B at cryogenic temperatures were investigated through unnotched and notched tensile tests at 20 and 77 K Marked microstructural refinement ...
• Enhancement in creep resistance of Ti-6Al-4V alloy due to boron addition 

  Singh, Gaurav; Satyanarayana, D. V. V.; Pederson, Robert; Datta, Ranjan; Ramamurty, Upadrasta (Elsevier Science Sa, 2014)

  The addition of B, up to about 0.1 wt%, to Ti-6Al-4V (Ti64) reduces its as-cast grain and colony sizes by an order of magnitude. In this paper, the creep resistance of this alloy modified with 0.06 and 0.11 wt% B additions ...
• 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 ...
• 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 ...
• Structural characterization of epitaxial LiFe5O8 thin films grown by chemical vapor deposition 

  Loukya, B.; Negi, D. S.; Sahu, R.; Pachauri, N.; Gupta, A.; Datta, Ranjan (Elsevier Science Sa, 2016)

  We report on detailed microstructural and atomic ordering characterization by transmission electron microscopy in epitaxial LiFe5O8 (LFO) thin films grown by chemical vapor deposition (CVD) on MgO (001) substrates. The ...
• Stable p-type conductivity in B and N co-doped ZnO epitaxial thin film 

  Sahu, Rajib; Gholap, Hari Bhau; Mounika, Gandi; Dileep, Krishnan; Vishal, Badri; Ghara, Somnath; Datta, Ranjan (Wiley-V C H Verlag Gmbh, 2016)

  We report on the observation of stable p-type conductivity in B and N co-doped epitaxial ZnO thin films grown by pulsed laser deposition. Films grown at higher oxygen partial pressure (similar to 10(-1) Torr) shows p-type ...
• Pd-Pt alloys nanowires as support-less electrocatalyst with high synergistic enhancement in efficiency for methanol oxidation in acidic medium 

  Rana, Moumita; Patil, Pramod K.; Chhetri, Manjeet; Dileep, K.; Datta, Ranjan; Gautam, Ujjal K. (Academic Press Inc Elsevier Science, 2016)

  In a facile approach, Pd73Pt27 alloy nanowires (NWs) with large aspect ratios were synthesized in high yield by using sacrificial templates. Unlike majority of processes, our synthesis was carried out in aqueous solution ...
• Layer specific optical band gap measurement at nanoscale in MoS2 and ReS2 van der Waals compounds by high resolution electron energy loss spectroscopy 

  Dileep, K.; Sahu, R.; Sarkar, Sumanta; Peter, Sebastian C.; Datta, Ranjan (American Institute Physics, 2016)

  Layer specific direct measurement of optical band gaps of two important van der Waals compounds, MoS2 and ReS2, is performed at nanoscale by high resolution electron energy loss spectroscopy. For monolayer MoS2, the twin ...
• Exchange bias at low fields exhibited by the interface between epitaxial layers of ferromagnetic and charge-ordered rare-earth manganites 

  Saha, Rana; Vasu, K.; Negi, D. S.; Datta, Ranjan; Sundaresan, A.; Rao, C. N. R. (Wiley-V C H Verlag Gmbh, 2016)

  Epitaxial thin films of ferromagnetic La0.7Sr0.3MnO3 (LSMO) and charge-ordered, antiferromagnetic Y0.5Ca0.5MnO3 (YCMO) were deposited on SrTiO3 (100) substrates by pulsed laser deposition (PLD). The heterostructure undergoes ...
• Interferroelectric transition as another manifestation of intrinsic size effect in ferroelectrics 

  Narayan, Bastola; Sorb, Y. A.; Loukya, B.; Samanta, Atanu; Senyshyn, Anatoliy; Ranjan Datta; Singh, Abhishek Kumar; Narayana, Chandrabhas; Ranjan, Rajeev (American Physical Society, 2016)

  In general, crystallite size reduction is known to suppress the ferroic order (polarization or magnetization) in ferroelectric and magnetic systems. Using free particles of a giant tetragonality (c/a-1 = 0.18) ferroelectric ...
• Size and morphology controlled NiSe nanoparticles as efficient catalyst for the reduction reactions 

  Subbarao, Udumula; Marakatti, Vijaykumar S.; Amshumali, Mungalimane K.; Loukya, B.; Singh, Dheeraj Kumar; Datta, Ranjan; Peter, Sebastian C. (Academic Press Inc Elsevier Science, 2016)

  Facile and efficient ball milling and polyol methods were employed for the synthesis of nickel selenide (NiSe) nanoparticle. The particle size of the NiSe nanoparticle has been controlled mechanically by varying the ball ...

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