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Prof. B Harihara Venkataraman  

Professor,
Department of Physics

Dielectric, Ferroelectric/Multiferroic ceramics for memory and photovoltaic devices, Glass/Polymer composites for capacitor and optical based device applications, Piezoelectric and Nonlinear optical materials, Structure - property correlation studies in electroceramic materials
Birla Institute of Technology & Science, Pilani
Hyderabad Campus
Jawahar Nagar, Kapra Mandal
Dist.-Medchal-500 078
Telangana, India

Publications

1) Defect induced control on current conduction of cobalt doped BiFeO3 thin-film devices, Waseem Ahmad Wani, B.HariharaVenkataraman and        Kannan Ramaswamy, Journal of Electronic Materials (Accepted In Print) 2023. [Publisher: Springer]

2)Connecting electrical current conduction and Urbach energy in doped BiFeO3 thin-films, Waseem Ahmad Wani, B.HariharaVenkataraman and Kannan Ramaswamy, Materials Chemistry and  Physics, 298 (2023) pp. 127468. [Publisher: Elsevier]

3)What ails the photovoltaic performance in single-layered unpoled BFO? - The role of oxygen annealing in improving the photovoltaic efficiency, Waseem Ahmad Wani, H. Renuka, Souvik Kundu, Sanket Goel, Harihara Venkataraman, Kannan Ramaswamy, Solar Energy, 236 (2022) 822 - 831. [Publisher: Elsevier]

4)Role of Molybdenum Doping in Reducing Leakage Current Density of BiFeO3 based Thin Film Devices, Waseem Ahmad Wani, Ashi Sinha, B. Harihara Venkataraman and Kannan Ramaswamy, Ferroelectrics, 598 (2022) 159-168. [Publisher: Taylor & Francis]

5) Tunable bandgap in cobalt doped bismuth ferrite nanoceramics: The role of annealing temperature, Waseem Ahmad Wani, Souvik Kundu, Kannan      Ramaswamy and B.HariharaVenkataraman, Materials Science and Engineering B, 271 (2021) pp. 115299. [Publisher: Elsevier]
 
6) Extensive Enhancement in Charge Collection Efficiency of Ferroelectric Cr - doped BFO based Solar Cells by using TiO2 Nanotube Arrays, H. Renuka, Sarda Sharma, B. Harihara Venkataraman, Kannan Ramaswamy, Karumbaiah N. Chappanda, Souvik Kundu, and Sanket Goel, IEEE Journal of Photovoltaics, 11 (2021) 1278 - 1284. [Publisher: IEEE]

7)Submerged Solar Energy Harvesting using Ferroelectric Ti-doped BFO based Heterojunction Solar Cells, H. Renuka, Prasanth K. Enaganti, B. Harihara Venkataraman, Kannan Ramaswamy, Souvik Kundu and Sanket Goel, International Journal of Energy Research, 45 (2021) 20400 - 20412. [Publisher: Wiley]

8)Enhanced Photovoltaic Response in Ferroelectric Ti-doped BFO Heterojunction through Interface engineering for Building Integrated Applications, H. Renuka, Ashutosh Garudapalli, Akhil Raman T. S, B. HariharaVenkataraman, Kannan Ramaswamy, K. C. James Raju, Sanket Goel, and Souvik Kundu, Solar Energy, 225 (2021) 863 - 874 [Publisher:  Elsevier]

9) Understanding the efficacy of electron and hole transport layers in realizing efficient chromium doped BiFeO3 ferroelectric photovoltaic devices, H. Renuka, P. Joshna,  B.HariharaVenkataraman, Kannan Ramaswamy and Souvik Kundu, Solar Energy, 207 (2020) 767 - 776. [Publisher: Elsevier]

10) Plasmonic gold nanorods mediated p-BFCrO/n-rGO heterojunction in realizing efficient ferroelectric photovoltaic devices, H. Renuka, P. Joshna, Waseem Ahmad Wani, B.HariharaVenkataraman, Kannan Ramaswamy and Souvik Kundu, Materials Science in Semiconductor Processing, 109 (2020) pp. 104937.[Publisher: Elsevier]

11) Structural, morphological, optical and dielectric investigations in cobalt doped bismuth   ferrite nanoceramics prepared using the sol - gel citrate precursor method, Waseem Ahmad Wani, Souvik Kundu, Kannan Ramaswamy and B.HariharaVenkataraman, Journal of Alloys and Compounds, 846 (2020) pp. 156334. [Publisher: Elsevier] 

12) Optimizing phase formation of BiFeO3 and Mn-doped BiFeOnanoceramics via thermal treatment using citrate precursor method, Waseem Ahmad Wani, Souvik Kundu, Kannan Ramaswamy and B.HariharaVenkataraman, Applied Sciences, 2 (2020) pp. 1969. [Publisher: Springer Nature]

13) Dielectric and Electrical Conductivity Characteristics of Undoped and Samarium Doped Ferroelectric SrBi2Ta2O9 Ceramics Derived From Molten Salt Synthesis Route, B. Rajesh Kannan and B. Harihara Venkataraman, Ferroelectrics , 493 (2016) 110 - 119 [Publisher : Taylor and Francis]  

14) Structural and dielectric properties of strontium bismuth samarium tantalate layered perovskites, B. Rajesh Kannan and B. Harihara Venkataraman, Ferroelectric Letters, 42 (2015) 18-26  [Publisher : Taylor and Francis]

15) Dielectric relaxor and conductivity characteristics of undoped and samarium doped barium bismuth niobate ferroelectric ceramics, B. Rajesh Kannan andB. Harihara Venkataraman, Ferroelectric Letters, 43 (2016) 82 - 89 [Publisher : Taylor and Francis]

16) Effect of rare earth ion doping on the structural, microstructural and diffused phase transition characteristics of BaBi2Nb2O9relaxor ferroelectrics, B. Rajesh Kannan andB. Harihara Venkataraman, Ceramics International, 40 (2014) 16365 [Publisher : Elsevier]

17) Influence of samarium doping on structural and dielectric properties of strontium bismuth tantalate ceramics derived by molten salt synthesis route, B. Rajesh Kannan andB. Harihara Venkataraman, Journal of Materials Science : Materials in Electronics, 25 (2014) 4943 [Publisher : Springer]

18) An integrated use of Biopolymer-Ceramic composites towards capacitor and environmental applicationB. Rajesh Kannan, S. Kalidhasan, A. Santhana Krishna Kumar,N. Rajeshand B. Harihara Venkataraman, Polymer - Plastics Technology and Engineering, 53 (2014) 626 [Publisher : Taylor and Francis]

19) Book Chapter :

 “Multifarious Transparent Glass Nanocrystal Composites” in a book entitled    Photonic  Glasses and Glass-Ceramics147 - 193, 2010 (ISBN : 978 - 81 - 308 - 0375 - 3), C. Karthik, M. Niyaz Ahamad, B. Harihara Venkataraman, N. Syam Prasad, G.   Senthil  Murugan and K. B. R. Varma

20) Synthesis and characterization of rare earth doped SrBi2Nb2O9phase in lithium borate based nanocrystallized glasses, B. Harihara Venkataraman, T. Fujiwara and T. Komatsu, Journal of Solid State Chemistry, 182 (2009) 1538

21)  Influence of Sm2O3doping on formation and structure of SrBi2Nb2O9nanocrystals in lithium borate glasses, B. Harihara Venkataraman, T. Fujiwara, K.B.R. Varma and T. Komatsu, Materials Chemistry and Physics, 117 (2009) 244

22) YAG laser induced structural modification in the transition metal ion containing  40K2O - 40Nb2O5- 20SiO2glasses, B. Harihara Venkataraman and T. Komatsu, Materials Research Bulletin, 43 (2008) 2592

23) Electrical properties of SrBi2(Nb0.7V0.3)2O9-δ in the SrO - Bi2O3 - 0.7Nb2O5 - 0.3 V2O5 -Li2B4O7 glass system, B. Harihara Venkataraman and K.B.R. Varma, Journal of Non - Crystalline  Solids, 352 (2006) 695

24) Structural and optical properties of (100 - x)Li2B4O7- x(SrO - Bi2O3- 0.7 Nb2O5 - 0.3 V2O5)  glasses and glass nanocrystal composites, B. Harihara Venkataraman and K.B.R. Varma, Optical Materials, 28 (2006) 1423

25)  Structural, dielectric, pyroelectric and ferroelectric properties of glass nano composite : Lithium Borate - Strontium Bismuth Vanadium Niobate, B. Harihara Venkataramanand K.B.R. Varma, Ferroelectric letters,33 (2006) 39

26)Optical diffraction of Second Harmonic Signals in the LiBO2-Nb2O5 glasses induced by self organised LiNbO3 crystallites, B. Harihara Venkataraman, N. Syam Prasad, K.B.R. Varma, Vincent Rodriguez,  Mario Maglione, R. Vondermuhll and J. Etourneau, Applied Physics Letters, 87 (2005) 091113

27) Optical diffraction of Second Harmonic Signals in the LiBO2- Nb2O5 glasses  induced by self organised LiNbO3 crystallites, B. Harihara Venkataraman, N. Syam Prasad, K.B.R. Varma, Vincent Rodriguez,   Mario  Maglione, R. Vondermuhll and J. Etorneau, Paper Republished in American Institute of Physics, Virtual Journal of Nanoscale Science and Technology, Volume 12, Issue 10, September 2005

28)  Nanocrystallization of ferroelectric Strontium Bismuth Vanadium Niobate in  Lithium  tetraborate glasses, B. Harihara Venkataramanand K.B.R. Varma, Journal of Nanoscience and Nanotechnology, 5 (2005) 2108

29)  The influence of microscopic parameters on the ionic conductivity of    SrBi2(Nb1xVx)2O9-δ ceramics, B. Harihara Venkataraman and K.B.R. Varma, Journal of Materials Science, 38 (2003) 4895

30) The microstructural, dielectric, pyroelectric and ferroelectric properties of SrBi2(Nb1- xVx)2Oceramics, B. Harihara Venkataramanand K.B.R. Varma, Ferroelectrics, 315 (2005) 45

31) Microstructural, Dielectric, Impedance and Electric Modulus studies on vanadium doped and pure strontium bismuth niobate (SrBi2Nb2O9) ceramics, B. Harihara Venkataraman and K.B.R. Varma, Journal of Materials Science : Material in Electronics, 16 (2005) 335   

32) Frequency dependent dielectric characteristics of undoped and vanadium doped SrBi2Nb2O9ferroelectric ceramics : a comparative study, B. Harihara Venkataraman and K.B.R. Varma, Ferroelectrics, 324 (2005) 121

33) Optical diffraction of Second Harmonic Generation in  SrBi2(Nb0.7V0.3 )O9  in the   SrO - Bi2O3 - 0.7 Nb2O5 - 0.3 V2O5 - Li2B4O7 glass system, B. Harihara Venkataraman, K.B.R. Varma, Vincent Rodriguez, Mario Maglione, and  J.  Etorneau, Journal of Synthetic Metals, 155 (2005) 434

34) Frequency dependent dielectric characteristics of ferroelectric SrBi2Nb2O9ceramics, B. Harihara Venkataraman and K.B.R. Varma, Solid State Ionics, 167 (2004) 197

35) Grain orientation and anisotropy in the physical properties of SrBi2(Nb1-xVx)2O9ceramics, B. Harihara Venkataraman and K.B.R. Varma, Journal of Materials Science, 38 (2003) 4895

36) Impedance and dielectric studies of ferroelectric SrBi2Nb2O9ceramics,B. Harihara Venkataraman and K.B.R. Varma, Journal of Physics and Chemistry of Solids, 64 (2003) 2105