ranjith@msme.iith.ac.in

  1. Multiferroics perspectives on strain, structure and properties. Ranjith Ramadurai, Saj Mohan Mohandas Moolayil. River Publishers, 2022.

  2. Indentation Based Fracture Toughness Estimation of Barium Titanate Thin Film Using Experiments and Simulations. Gopi Gulivindala, Madhu Kiran Karanam, Ranjith Ramadurai, Viswanath Chinthapenta. Thin Solid Films,Volume 755,2022,139325,ISSN 0040-6090

  3. Estimation of gradient size of interfacial strain and its optimization for effective magnetoelectric coupling in (CoFe2O4)–(0.93 Na0. 5Bi0. 5TiO3–0.07 BaTiO3), 2-2 nano-composites. Anantha P Bhat, Ranjith Ramadurai. Ceramics International, Volume 48, Issue 6, 2022,Pages 7622-7628,ISSN 0272-8842.

  4. Layer number dependent optical and electrical properties of CVD grown two-dimensional anisotropic WS2. Deepa Thakur, Pawan Kumar, M Sabarigresan, Ranjith Ramadurai, Viswanath Balakrishnan. Surfaces and Interfaces, Volume 26, 2021, 101308, ISSN 2468-0230.

  5. Stability, Evolution and Switching of Ferroelectric Domain Structures in Lead-free BaZr0.2Ti0.8O3-Ba0.7Ca0.3TiO3 System: Thermodynamic Analysis and Phase-field Simulations. Soumya Bandyopadhyay, Tushar Jogi, Ranjith Ramadurai, Saswata Bhattacharya. arXiv preprint arXiv:2101.03066. 2021/1/8 .

  6. Grain to Grain Epitaxy Like Nano Structures of (Ba,Ca)(ZrTi)O3/ CoFe2O4 for Magneto-Electric based devices., Prabahar K, Anantha P Bhat, Adiraj S and Ranjith Ramadurai , ACS Applied Nano Materials 2020 3 (11), 11098-11106. DOI: 10.1021/acsanm.0c02265

  7. Dielectric Switching Studies of poly-vinylidene fluoride thin films with dominant planar ferroelectric domain configuration for flexible electronic devices ”, Ronit Ganguly; Hasnat Zamin; Nishant Saxena; Anbarasu Manivannan; Amit Acharyya; Ranjith Ramadurai, IEEE, (TDEI) Vol 26, No4, 1371, (2019).

  8. Effect of non- polarization invariants on the exchange bias of tetragonal ⟨001⟩ and rhombohedral ⟨111⟩ orientations of bismuth ferrite epitaxial thin films” MM Sajmohan, R Ranjith, JA Chelvane, Bulletin of Materials Science 42 (5), 208 (2019)

  9. Study of Stiffness and flexible sensing performance of poly-vinylidene fluoride (PVDF) a piezo polymer with varying polarization components”, R Ganguly, K Rajesh, A Acharyya, R Ramadurai 2019 IEEE 14th Nanotechnology Materials and Devices Conference (NMDC), 1-5

  10. Realization of Rhombohedral, Mixed and Tetragonal like phases of BiFeO3 and Ferroelectric Domain Engineering Using a Strain Tuning Layer on LaAlO3(001) Substrate” Saj Mohan M M, Soumya Bandyopadhyay, Tushar Jogi, Saswata Bhattacharya, Ranjith Ramadurai; J. Appl. Phys. 125 (2019) 12501. doi:10.1063/1.5054372.

  11. Effect of magnetic field annealing on the magnetostriction and deflection properties of CoFe2O4 thin films grown by PLD ” K Prabahar, R Ranjith, P Saravanan, A Srinivas, J. Magn. Magn. Mater. 475, 276-281 (2019)

  12. Tunable polarization components and electric field induced crystallization in polyvinylidenefluoride: A piezo polymer ”, Ronit Ganguly, Soumya Bandyopadhyay, Kumaraswamy Miriyala, Vijayabhaskar Gunasekaran, Saswata Bhattacharya, Amit Acharyya, Ranjith Ramadurai ;Polymer crystallization, 2(1), e 10027 (2019)

  13. The role of B-site substitution on the structural and dielectric properties of samarium orthoferrite polycrystals “,N Ramu, K Meera, R Ranjith, R Muralidharan, Materials Research Express 6 (3), 036106 (2019)

  14. Microstructural Influence on Ferroelectric Domain Pattern and Piezoelectric Properties of Na0.5Bi0.5TiO3 Thin Films” Kumaraswamy Miriyala, Ranjith Ramadurai, Ceram. Int., 44 14556-14562. (2018)

  15. Nanomechanical behavior of Pb (Fe0. 5− xScxNb0. 5) O3 multiferroic ceramics”, D Singh, B Mallesham, A Deshinge, K Joshi, R Ranjith, V Balakrishnan, Materials Research Express 5 (11), 116303 (2018)

  16. Template assisted strain tuning and phase stabilization in epitaxial BiFeO3 thin films, Saj Mohan M. M., Ranjith Ramadurai, AIP Conference Proceedings. 1942 80040. (2018) doi:10.1063/1.5028874.

  17. Tip Induced Surface Defect migration and Conductivity Studies in Tetragonal, Rhombohedral and Mixed Phase epitaxial BiFeO3 Thin Films” Saj Mohan M M, Sreenath M V And Ranjith Ramadurai, MRS Advances, 3(44), 2713-2718. (2018) doi:10.1557/adv.2018.463.

  18. Effect of deposition temperature on the microstructure, ferroelectric and mechanical properties of lead free BCZT ceramic thin films” K.Prabahar,R.Ranjith,A.Srinivas, S.V.Kamat, B.Mallesham,V.L.Niranjani, PaulPraveen, DibakarDas, Ceramics International 43(6), pp. 5356-5361 (2017)

  19. Local Structural Distortion and Interrelated Phonon Mode Studies in Yttrium Chromite’ Venkateswara rao Mannepalli, Rajamani Raghunathan, R.Ranjith, A.David and W.Prellier Journal of Materials Research, 32 (8), 1541-1547 (2017) doi: 10.1557/jmr.2017.5

  20. Tailoring the bandgap and magnetic properties by bismuth substitution in neodymium chromite”, Mannepalli, V.R., Saj Mohan, M.M., Ranjith, R., Bulletin of Materials Science 40(7), pp. 1503-1511 (2017)

  21. Structural and Electrical Transport studies in Bi-Substituted Yttrium chromite” Venkateswara rao Mannepalli and Ranjith Ramadurai; Journal of Materials Science: Materials in Electronics, (2017) (doi: 10.1007/s10854-017-6514-5)

  22. AC - Conductivity studies on Y1-xBixCrO3 solid solution”, Mannepalli, V.R., Ramadurai, R. AIP Conference Proceedings 1832,110017 (2017)

  23. Tunable Ferroelectric domain orientation in polycrystalline and highly oriented Na0.5Bi0.5TiO3 thin films”, Kumaraswamy Miriyala and Ranjith Ramadurai, Materials Letters, 178, 23-26 (2016)

  24. A phase-field study of domain dynamics in ferroelectric BCT-BZT system”Soumya Bandyopadhyay, Tushar Jogi, Kumaraswamy Miriyala, Ranjith Ramadurai and Saswata Bhattacharyya MRS Advances June 2016, pp 1 - 6 DOI: 10.1557/adv.2016.384, 23 May 2016

  25. Microstructural influence on piezoresponse and leakage current behavior of oriented Na0.5Bi0.5TiO3 thin films”, Kumaraswamy Miriyala and Ranjith Ramadurai, MRS Advances, May 2016, http://dx.doi.org/10.1557/adv.2016.350

  26. Studies on Local Structural Inhomogeneity and Origin of Ferroelectricity in Yttrium chromite Ceramics" , Venkateswara rao Manepalli and Ranjith Ramadurai, MRS Advances, March 2016 - http://dx.doi.org/10.1557/adv.2016.222

  27. Investigations on Dielectric phase transition behavior of Pb(Fe0.5-xScx)Nb0.5O3 Multiferroic Ceramics" , Bandi Mallesham and Ranjith Ramadurai, MRS Advances, Feb 2016 http://dx.doi.org/10.1557/adv.2016.145

  28. Effect of Crystal Structure and Cationic Order on Phonon Modes across Ferroelectric Phase Transformation in Pb(Fe0.5-xScxNb0.5)O3 Bulk Ceramics” B. Mallesham, B. Viswanath and R. Ranjith, AIP Advances, 6, 015116 (2016)

  29. E. Bruyer, A. Sayede, A. Ferri, R. Desfeux, R.V.K. Mangalam, R. Ranjith, W. Prellier Insight on the ferroelectric properties in a (BiFeO3)2(SrTiO3)4 superlattice from experiment and ab initio calculations Applied Physics Letters 107, 042904 (2015)

  30. Anbarasu Manivannan, Santhosh Kumar Miana, Kumaraswamy Miriyala, Smriti Sahu & Ranjith Ramadurai, “Low power threshold switching characteristics of thin GeTe6 films using conductive atomic force microscopy,” Appl. Phys. Lett., 105, 243501 (2014)

  31. B. Mallesham, R.Ranjith & M.Manivelraja, “Scandium induced structural transformation and B:B cationic ordering in Pb(Fe0.5Nb0.5)O3 multiferroic ceramics”, Journal of Appl. Phys.,116, 034104 (2014).

  32. T.Durga Rao, R.Ranjith & Saket Asthana, “Enhanced magnetization and improved insulating character in Eu substituted BiFeO3”, Journal of Appl. Phys., 115, 124110 (2014)

  33. Karthik Thangavelu, Ranjith Ramadurai & Saket Asthana, Evidence for the suppression of intermediate anti-ferroelectric ordering and observation of hardening mechanism in Na1/2Bi1/2TiO3 ceramics through Cobalt substitution”, AIP Advances, 4, 017110 (2014)

  34. Chatla Naga Babu, Paladugu Suresh, Prasenjit Das, Arruri Sathyanarayana, Ranjith Ramadurai, Natarajan Sampath and Ganesan Prabusankar, Journal of Molecular Structure, 1062, 141-146 (2014).

  35. Ke Xu, Ramadurai Ranjith, Apurba Laha, Harish Pala, Andrian P Milanov, Roland A. Fischer, Eberhard Bugiel, Jurgen Feydt, Stefan Irsen, Teodar Toader, Claudia Bock, Detlef Rogalla, H.J. Osten, Ulrich Kunze and Anjana Devi, “ Atomic Layer Deposition of Gd2O3 and Dy2O3: A study of the ALD characteristics and structural and electrical properties”, Chem. Mater., 24, 651-658 (2012)

  36. J. Oliveira, J. Agostinho Moreira, A. Almeida, M. R. Chaves, J. M. M. da Silva, J. B. Oliveira, M. A. S´a, P. B. Tavares, R. Ranjith, and W. Prellier, “Phase diagram of the orthorhombic, lightly lutetium doped EuMnO3 magnetoelectric system”, Phys. Rev. B., 84, 094414 (2011)

  37. R.Ranjith, A.Laha, E.Bugiel, H.J Osten, K.Xu, A. Milanov and Anjana Devi, “ Down scaling of defected passivated Gd2O3 thin films on p-Si(001) wafers by H2O assisted atomic layer deposition” Semi. Sci. & Tech., 25 105001(2010).

  38. Z. Zhang, R. Ranjith, W. Prellier, B. Xie, Y. Zhao,L.M Wong, S. Wang, J. Wang,and T. Wu, “ Enhanced low field magnetoresistance in La0.7Sr0.3MnO3 nanocrystal/MgO nanotube composites”, Applied Physics Letters, 96 222501/1 – 222501/3 (2010).

  39. R.Ranjith, U.Lüders and W.Prellier, “Multiferroic studies on (BiFeO3)m(BaTiO3)n superlattices”, J. Phys. Chem. Of Solids, 71 1140-1143 (2010).

  40. J.Agostinho Moreira, A. Almeida, W.S.Ferreira, M.R.Chaves, S.M.F. Vilela, P.B. Tavares, B.Kundys, R.Ranjith and W.Prellier, “ Effect of the external fields on the polar and dielectric properties of Eu0.8Y0.2MnO3” Journal of Applied Physics, 107, 024108/1 - 024108/7 (2010)

  41. R.Ranjith, Ph.Boullay, A.David, R.V.K. Mangalam, M.B. Lepetit, U.Luders, W.Prellier, A.da Casto, A. Ferri, R.Desfeux, Gy.Vincze , Zs.Radi and C. Aruta, “Constrained Ferroelectric domain orientation in BiFeO3-SrTiO3 heterostructures”, Applied Physics Letters, 96, 022902/1 - 022902/3 (2010).

  42. Andrian P.Milanov, Ke Xu, Apurba Laha, E.Bugiel, R.Ranjith, D.Schwendt, H.J.Osten, Haris Parala, R.A.Fischer and Anjana Devi., “ Achieving high quality Gd2O3 thin films with sharp and abrupt interface on Si(100) by H2O assisted atomic layer deposition”, J.Amer.Chem.Soc., 132, 36 - 37(2010).

  43. Apurba Laha, E.Bugiel, M. Jestremski, R.Ranjith, A. Fissel and H.J.Osten, “Encapsulated solid phase epitaxy of Ge quantum well embedded into epitaxial rare earth oxide”, Nanotechnology, 20, 475604/1 - 475604/7 (2009).

  44. J.A. Moreira, A. Almeida, W.S. Ferreira, M.R.Chaves, B.Kundys, R.Ranjith, W.Prellier, S.M.F. Vilela and P.B. Tavares, “Polar properties of Eu0.6Y0.4MnO3 ceramics and their magnetic field dependence”, Journal of physics: Cond matt, 21, 446002/1 - 446002/10 (2009)

  45. R.Ranjith, U.Luders, W.Prellier, A.Da Costa, Ida Dupont and R. Desfeux, “Local Probing of the ferroelectricity in BiFeO3 thin films and (BiFeO3)m(SrTiO3)m superlattices”, JMMM, 321, 1710 - 1713 (2009).

  46. Mahua das, R.Ranjith, C.Bittencourt, S.B. Krupanidhi, J.J. Pireaux and S.A.Shivashankar, “Assembly of sol-gel-grown LixCoO2 nanocrystals through electromagnetic irradiation”, Applied Physics – A, 95, 523 - 536 (2008).

  47. Asish K Kundu, R.Ranjith, B.Kundys, N.Nguyen, V.Caignaert, V.Pralong, W.Prellier and B.Raveau , “A Multiferroic ceramic with perovksite structure: (La0.5Bi0.5)(Mn0.5Fe0.5)O3.09” Applied Physics Letters, 93, 052906/1 - 052906/1 (2008).

  48. Asish K. Kundu, R.Ranjith, V.Pralong, V.Caignaert and B. Raveau, “Magneto-transport and Magneto-dielectric effect in Bi-based Perovskite Manganite” Journal of Material Chemistry, 18, 4280 - 4285 (2008).

  49. R.Ranjith, J.Cheah, J.Wang, W.Prellier and T.Wu, “dc Leakage behavior and conduction mechanism in (BiFeO3)m(SrTiO3)m superlattices”, Applied Physics Letters, 92, 232905/1 - 232905/3 (2008).

  50. M. Filippi, B. Kundys, R. Ranjith, A. Kundu, and W. Prellier, “Interfacial Contribution to the dielectric response in semiconducting LaBiMn4/3Co2/3O6”, Applied Physics Letters, 92, 212905/1 - 212905/3 (2008).

  51. R.Ranjith, Asis Kundu, M.Filippi, B.Kundys, W.Prellier, B.Raveau, J. Laverdiere, M.P.Singh and S.Jandl, “Ferromagnetic and Magneto-dielectric studies in ferromagnetic insulating LaBiMn4/3Co2/3O6 epitaxial thin films”, Applied Physics Letters, 92, 062909/1 - 062909/3 (2008).

  52. R. Ranjith, B. Kundys and W. Prellier, “Periodicity-dependence of the ferroelectric properties in BiFeO3/SrTiO3 multiferroic superlattices”, Applied Physics Letters, 91, 222904/1 - 222904/3 (2007).

  53. R.Ranjith and S.B.Krupanidhi, “Antiferroelectric like polarization behavior in compositionally varying (1-x)Pb(Mg1/3Nb2/3)O3 – (x) PbTiO3 multilayers”, Applied Physics Letters, 91, 082907/1 - 082907/3 (2007).

  54. Asis Sarkar, R.Ranjith and S.B.Krupanidhi, “Non linear dielectric behavior in three-component ferroelectric superlattices”, Journal of Applied Physics, 102, 024108/1 - 024108/6 (2007).

  55. Ayan Roychaudri, R.Ranjith, S.B.Krupanidhi, R.V.K Mangalam, A.Sundaresan, S.Majumdar and S.K.Ray, “Realization of biferroic properties in La0.6Sr0.4MnO3/0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 epitaxial superlattices”, Journal of Applied Physics, 101, 114104/1 - 114104/9 (2007).

  56. R.Ranjith, Ayan Roychaudri, P.Victor and S.B.Krupanidhi, “Role of a template layer over phase formation, microstructure and polarization behavior of a ferroelectric relaxor thin film over platinum substrates”, Journal of Applied Physics, 101, 104111/1 - 104111/9 (2007).

  57. Ayan Roychaudri, R.Ranjith, S.B.Krupanidhi, R.V.K Mangalam and A.Sundaresan, “Interface dominated biferroic La0.6Sr0.4MnO3/0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 epitaxial superlattices”, Applied Physics Letters, 90, 122902/1 - 122902/3 (2007).

  58. R.Ranjith, R.Nikhil and S.B.Krupanidhi, “Interfacial Coupling and their Size Dependence on PbTiO3 – PbMg1/3Nb2/3O3 Multilayers”, Phys. Rev.B, 74, 184104/1 - 184104/10 (2006).

  59. R.Vengadesh Kumara Mangalam, R.Ranjith, A.Iyo, A.Sundaresan, S.B.Krupanidhi and C.N.R.Rao, “Ferroelectricity in Bi26-xMxO40-(M=Al and Ga) having -Bi2O3 related structure,” Solid State Communications, 140, 42 - 44 (2006).

  60. R.Ranjith, Asis Sarkar, Apurba Laha, S.B.Krupanidhi, A.K.Balamurugan, S.Rajagopalan and A.K.Tyagi. “Dielectric phase transition and polarization studies in stepped and compositionally graded lead magnesium niobate - lead titanate relaxor thin films”. Journal of Applied Physics, 98, 014105/1 - 014105/7 (2005).

  61. R.Ranjith, Apurba Laha and S.B.Krupanidhi, “Enhanced tunability and phase transition studies in compositionally varying lead magnesium niobate–lead titanate multilayered thin films”. Applied Physics Letters, 86, 92902/1 - 92902/3 (2005).

  62. P.Victor, R.Ranjith and S.B.Krupanidhi, “Normal Ferroelectric to relaxor behavior of laser ablated Ca-doped Barium Titanate Thin films” Journal of Applied Physics, 94, 7702 - 7709, (2003).

  63. P.Victor, R.Ranjith, A.K.Tyagi, S.Rajagopalan and S.B.Krupanidhi, “Growth and studies of calcium doped laser ablated barium titanate thin films”, Integrated Ferroelectrics, Volume 54, 747-754 (2003).

  64. Growth and study of BaZrO3 thin films by pulsed excimer laser ablation , Rajasekarakumar, V., Victor, P., Ranjith, R., (...), Tyagi, A.K., Krupanidhi, S.B. 2003 Materials Research Society Symposium - Proceedings 784, pp. 399-404

  65. Dielectric studies of laser ablated Ca doped BaTiO3 thin films Victor, P., Ranjith, R., Sarkar, A.,.. Saha, S., Krupanidhi, S.B. 2003 Materials Research Society Symposium - Proceedings 748, pp. 135-140

  66. Surojit Gupta, R.Ranjit, C.Mitra, Pratap.R and R.Pinto, “Enhanced room temperature Magnetoresistance in La0.7Sr0.3MnO3 – glass composites”, Applied Physics Letters, 78, 362 - 364 (2001).

  1. Ph.D MS11P1001 Bandi Mallesham - “ Structure, Cation Ordering and Phonon studies of Pb(Fe0.5-xScxNb0.5)O3, a Multiferroic Relaxor : Bulk and Thin Films” – August 2016 – Completed

  2. Ph.D MS11P1004 Venkateswara Rao M - “Structural, Electrical, Optical and Magnetic properties of Y1-xBixCrO3 and Nd1-xBixCrO3(x=0 to 0.15) Ceramics” – August 2016 - Completed

  3. Ph.D MS12P0004 Kumaraswamy Miriyala - “ Texture and Microstructural Influence on Piezoelectric Properties of Na0.5Bi0.5TiO3 Thin Films: A Lead Free Piezoelectric Material – August 2019 – Completed

  4. Ph.D MS12P1002 K. Prabahar - “Growth and Characterization of lead free Multiferroic (Ba0. 85Ca0.15) (Zr0.10Ti0.90)O3 - CoFe2O4 Nano Composite Thin Films” – August 2019 – Completed

  5. Ph.D MS13P1006 Saj Mohan M M - “Influence of Strain and Anisotropy on Structure of BiFeO3 Epilayers and their Utilization as Interface Driven Heterostructures for Multiferroic Device Applications” – August 2019 – Completed

  6. Ph.D EE15resch02014 – Ronit Ganguly - “ Flexible Piezoelectric Polymer (Polyvinylidene Fluoride – PVDF) and Hybrid (PVDF-BiFeO3) nano composites for Sensing and Energy Harvesting applications ” – Co-supervised along with Dr. Amit Acharya, EE –thesis submitted.

  1. Development of lead free piezoelectric thin film based vibration energy harvestors ( power range of nW to micro Watt and frequency range few Hz to few 100 Hz)

  2. Development of flexible piezoelectric hybrid nanocomposites for energy harvesting from fluid and/or gas flow conditions. (in collaboration with Dr. Amit Acharya, EE)

  3. FERROELECTRIC POLYMER (Β-PVDF) FOR CONTROL AND MITIGATION OF MICROBES UNDER SMALL VOLTAGE SIGNALS" - Indian Patent Application No. 202041050666: A ferroelectric polymer fabricated and tested for its anti-microbial behavior ( anti-bacterial, anti-viral and anti-fungal). These patches can be utilized on face mask and other PPE for health care workers. (in collaboration with Dr. Aravind. BME, IITH - IITH- IDP 2020)

  4. Development of a 3 point bending stage for scanning probe microscope that would facilitate imaging of samples at nanoscale under stressed conditions (part of DST-SERB project)

  5. Development of a gas sensor prototype and a bulk ceramic based vibration sensors as a part of DISANET – an institute project with Indo-Japan collaboration.

  1. Indian Patent Application No. 202041050666: FERROELECTRIC POLYMER (Β-PVDF) FOR CONTROL AND MITIGATION OF MICROBES UNDER SMALL VOLTAGE SIGNALS"

  2. Indian Patent Application No. 202041053912"A DEVICE CONFIGURABLE IN A MICROSCOPE FOR REAL TIME TESTING AND IMAGING OF A SAMPLE"

  3. PVDF-BFO Hybrid nano composite film for sensing and energy harvesting applications” - Filed - Number is awaited (as on 30 March 2021).