Shobit Omar

PhD, University of Florida at Gainesville,USA

Last Updated:

June 23rd, 2015

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Dr. Shobit Omar

Associate Professor
Materials Science and Engg.
IIT Kanpur
Kanpur, U.P., 208016
Ph: +91-512-679-(7427)
Email: somar[at]iitk.ac.in

Laboratory Contact Address

Electroceramics Laboratory
Western Lab IIT Kanpur
U.P.,208016
India
Ph: +91-512-259-(6752)

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Publications and Presentations

RESEARCH PUBLICATIONS


[36] Rahul Bhattacharyya, Soumitra Das and Shobit Omar, “Long-term Conductivity Stability of Acceptor Doped Na0.54Bi0.46TiO3-d ”, Solid State Ionics 330 40-46 (2019).

[35] Vandana Shukla, Kantesh Balani, Anandh Subramaniam Shobit Omar, “Phase Stability and Conductivity in the Pseudo Ternary System of xYb2O3-(12-x)Sc2O3-88ZrO2 (0 ≤ x ≤ 5)” Solid State Ionics 332 93-101 (2019).

[34] Rahul Bhattacharyya, Soumitra Das and Shobit Omar, “High Ionic Conductivity of Mg2+-doped Non-stoichiometric Sodium Bismuth Titanate”, Acta Materialia 159 5-18 (2018).

[33] Alka Gupta, Ambreen Nisar, Shobit Omar and Kantesh Balani, "Densification Kinetics of CeO2 Reinforced 8 mol. % Y2O3 Stabilized ZrO2 Ceramics", Journal of Minerals, Metals and Materials, 70 [10] 1937-1948 (2018).

[32] Satish Chandra Agarwal and Shobit Omar, “Forty Years of Staebler-Wronski Effect” Philosphical Magazine 98 [27] 2512-2528 (2018).

[31] Rahul Bhattacharyya and Shobit Omar, “Electrical Conductivity Study of B-Site Ga Doped Non-stoichiometric Sodium Bismuth Titanate Ceramics” Journal of Alloys and Compounds 746 54-61 (2018).

[30] Rahul Bhattacharyya and Shobit Omar, “Influence of A-site Na-doping on the Structural Characteristics and Electrical Conductivity of Na0.5Bi0.5TiO3”, Solid State Ionics Solid State Ionics 317C 115-121 (2018).

[29] Vandana Shukla, Shashwat Singh, Abhishek Jaiswal, Kantesh Balani, Anandh Subramaniam Shobit Omar, “Temporal Stability of Oxygen-ion Conductivity in 1Nb2O5-10Sc2O3-89ZrZrO2”, Journal of the European Ceramic Society 38 [4] 1688-1694 (2018).

[28] Abhishek Jaiswal, Alireza Pesaran Shobit Omar and Eric Wachsman “Ceria/Bismuth Oxide Bilayer Electrolyte based Low Temperature SOFCs with Stable Electrochemical Performance”, SOFC XV, Electrochemical Society Transactions, Hollywood, Florida, USA, S.C. Singhal and T. Kawada, Ed., 78 [1] 361-370 (2017).

[27] Ram Pyar Singh, Rahul Bhattacharyya and Shobit Omar, “Electrical Conductivity Study of CeO2-doped SrTiO3 Ceramics using Impedance Spectroscopy”, Solid State Ionics 309 1-8 (2017).

[26] Ashutosh Kumar, Ram Pyar Singh, Shashwat Singh, Abhishek Jaiswal and Shobit Omar, “Phase Stability and Ionic Conductivity of Cubic xNb2O5-(11-x)Sc2O3-ZrO2 (0 ≤ x ≤ 4)”, Journal of Alloys and Compounds 703 643-651 (2017).

[25] U. Aarthi, P. Arunkumar, M. Sribalaji, Anup Kumar Keshri, Ashutosh Rai, Shobit Omar, Kantesh Balani and K. Suresh Babu, “Interfacial Effect on Oxygen-ion Distribution and Conduction Mechanism in Strontium Added Ce0.8Sm0.2O2-δ/ Na2CO3 Nanocomposite”, The Journal of Physical Chemistry C, 120 [43] 25068-25077 (2016).

[24] Ashutosh Kumar, Abhishek Jaiswal, Mohit Sanbui and Shobit Omar, “Oxygen-ion Conduction in Scandia Stabilized Zirconia-Ceria Solid Electrolyte (xSc2O3-1CeO2-(99-x)ZrO2, 5 ≤ x ≤ 11)”, Journal of the American Ceramic Society 100 [2] 659-668 (2017).

[23] Vandana Shukla, Ashutosh Kumar, Ishamol L.B., Kantesh Balani, Anandh Subramaniam Shobit Omar, “Structural Characteristics and Electrical Conductivity of Spark Plasma Sintered Yb2O3 Co-doped Sc2O3 Stabilized ZrO2”, Journal of the American Ceramic Society 100 [1] 201-214 (2017).

[22] Ashutosh Kumar, Abhishek Jaiswal, Mohit Sanbui, Shobit Omar, “Scandia Stabilized Zirconia-Ceria Solid Electrolyte (xSc1CeSZ, 5 < x < 11) for IT-SOFCs: Structure and Conductivity Studies”, Scripta Materialia 121, 10-13 (2016).

[21] Rita Maurya, Alka Gupta, Shobit Omar and Kantesh Balani, “Effect of sintering on mechanical properties of ceria reinforced yttria stabilized zirconia”, Ceramics International 42 (9), 11393-11403 (2016).

[20] Preeti Bajpai, Amit Das, Prajina Bhattacharya, Shimjith Madayi, Kaustubh Kulkarni and Shobit Omar, “Hot Corrosion of Stabilized Zirconia Thermal Barrier Coatings and the Role of Mg-Inhibitor”, Journal of the American Ceramics Society, Journal of the American Ceramic Society, 98 [8] 2655-2661 (2015).

[19] Neelima Mahato, Amitava Banerjee, Alka Gupta, Shobit Omar and Kantesh Balani, “Progress in Material Selection for Solid Oxide Fuel Cell Technology: A Review”, Progress in Materials Science, 72 141-337 (2015).

[18] Ram Pyar Singh, Subhrajeet Paul and Shobit Omar, “Phase Evolution in CeO2 Doped SrTiO3”, Journal of Alloys and Compounds, 623 197-202 (2015).

[17] Abhinav Rai, Prashant Mehta and Shobit Omar, “Ionic Conduction Behavior in SmxNd0.15-xCe0.85O2-δ”, Solid State Ionics, 263, 190-196 (2014).

[16] Shobit Omar and Juan C. Nino, “Consistency in the Chemical Expansion of Fluorites – A Thermal Revision of the Doped Ceria Case”, Acta Materialia, 61 [13] 5406-5413 (2013).

[15] Shobit Omar, Waqas bin Najib, Weiwu Chen, and Nikolaos Bonanos “Ionic Conductivity of Co-doped Sc2O3-ZrO2 Ceramics”, American Institute of Physics Conference Proceedings, 1461, 289-293 (2012).

[14] Alka Gupta, Samir Sharma, Neelima Mahato, Amanda Simpson, Shobit Omar and Kantesh Balani, “Mechanical Properties of Spark Plasma Sintered Ceria Reinforced 8 mol% Yttria Stabilized Zirconia Electrolyte”, Nanomaterials and Energy, 1 [5] 306-315 (2012).

[13] Shobit Omar, Waqas Bin Najib, Weiwu Chen and Nikolaos Bonanos, “Electrical Conductivity of 10 mol.% Sc2O3 - 1 mol.% M2O3 - ZrO2 Ceramics”, Journal of the American Ceramics Society 95 1965-72 (2012).

[12] Shobit Omar, Waqas Bin Najib and Nikolaos Bonanos, “Conductivity Ageing Studies on 1M10ScSZ (M4+ = Ce, Hf)”, Solid State Ionics, 189 100-106 (2011).

[11] Shobit Omar, Adriana Belda, Agustín Escardino and Nikolaos Bonanos, “Ionic Conductivity Ageing Investigation of 1Ce10ScSZ in Different Partial Pressures of Oxygen”, Solid State Ionics, 184 2-5 (2011).

[10] Shobit Omar, and Nikolaos Bonanos, “Ionic Conductivity Ageing Behavior of 10 mol% Sc2O3-1 mol% CeO2-ZrO2 Ceramics”, Journal of Materials Science, 45 [23] 6406-6410 (2010).

[9] Jin Soo Ahn, Shobit Omar, Eric D. Wachsman, and Juan C. Nino, “Performance of Anode-Supported SOFC using Novel Ceria Electrolyte”, Journal of Power Sources, 191 2131-2135 (2010).

[8] Shobit Omar, Eric D. Wachsman, Jacob L. Jones, and Juan C. Nino, “Crystal Structure-Ionic Conductivity Relationships in Doped Ceria Systems”, Journal of the American Ceramics Society, 92 [11] 2674–2681 (2009).

[7] Y. Chen, Shobit Omar, A. K. Keshri, K. Balani, K. Babu, Juan C. Nino, Sudipta Seal, and Arvind Agarwal, “Ionic Conductivity of Plasma Sprayed Nanocrystalline YSZ Electrolyte for Solid Oxide Fuel Cell”, Scripta Materialia, 60 [11] 1023-1026 (2009).

[6] Abhijit Pramanick, Shobit Omar, Juan C. Nino, and Jacob L. Jones, “Lattice Parameter Determination Using Extrapolation Method for a Curved Position-Sensitive Detector in Reflection Geometry and Application to Smx/2Ndx/2Ce1-xO2- Ceramics”, Journal of Applied Crystallography, 42 490-495 (2009).

[5] Irina P. Roof, Sangmoon Park, Tom Vogt, Shobit Omar, Juan C. Nino, Mark D. Smith, Hans-Conrad zur Loye, “Crystal Growth of Two New Niobates, La2KNbO6 and Nd2KNbO6: Structural, Dielectric, Photophysical and Photocatalytic Properties”, Chemistry of Materials, 20 3327- 3335 (2008).

[4] Shobit Omar, Eric D. Wachsman, and Juan C. Nino, “Higher Conductivity Sm3+ and Nd3+ Co-Doped Ceria Based Electrolyte Materials", Solid State Ionic, 178 [37-38] 1890-1897 (2008).

[3] Shobit Omar, Eric D. Wachsman, and Juan C. Nino, “Higher Ionic Conductive Ceria Based Electrolytes for Solid Oxide Fuel Cells", Applied Physics Letters, 91 [14] Art. No. 144106 (2007).

[2] Shobit Omar, Eric D. Wachsman, and Juan C. Nino, “A Co-Doping Approach Towards Enhanced Ionic Conductivity in Fluorite-Based Electrolytes”, Solid State Ionics, 177 [35-36] 3199-3202 (2006).

[1] Shobit Omar, Eric D. Wachsman, and Juan C. Nino, “Development of Higher Ionic Conductivity Ceria Based Electrolyte”, Solid State Ionic Devices IV, ECS Transactions, Los Angeles, E.D. Wachsman, F.H. Garzon, E. Traversa, R. Mukundan, and V. Birss, Ed., 1 [7] 73-82 (2005).



CONFERENCES

    [14] Shobit Omar, Subhrajeet Paul and Ram Pyar Singh, “Defect Reaction Mechanism in CeO2-doped SrTiO3”, 52nd National Metallurgical Day & 68thAnnual Technical Meeting, Pune, Maharasthra, India November 12-15, 2014 (Invited Speaker).

    [13] Shobit Omar, Waqas Bin Najib, Weiwu Chen and Nikolaos Bonanos, “Ionic Conductivity Behavior in the Co-doped Sc2O3-ZrO2 Ceramics”, International Workshop on Functional Materials 2011, Berhampur, Orissa, India, December 19-22, 2011.

    [12] Shobit Omar, Emiliana Fabbri, Daniele Pergolesi, and Enrico Traversa, “Electrical Conductivity of the Thin-Film Co-doped Ceria”, Materials Nanoarchitectonic (MANA) Symposium 2011, Tsukuba, Japan, March 2-4, 2011.

    [11] Shobit Omar, Adriana Belda and Nikolaos Bonanos, “Ionic Conductivity Ageing Investigation on 1Ce10ScSZ in Different Partial Pressures of Oxygen”, European Materials Research Society Spring Meeting, Strasbourg, France, June 7-11, 2010.

    [10] Juan C. Nino, Eric D. Wachsman, and Shobit Omar, “Intermediate Temperature Structure-ionic Conductivity Relationships in Ceria-based Electrolytes”, 33rd International Conference & Exhibition on Advanced Ceramic & Composites, Daytona Beach, Florida, USA, January 18-23, 2009.

    [9] Shobit Omar, Jin Soo Ahn, Jacob L. Jones, Eric D. Wachsman, and Juan C. Nino, “Crystal Structure and Conductivity of Doped Ceria Electrolytes at Intermediate Temperatures”, Electroceramics XI, Manchester, UK, August 31 - September 4, 2008.

    [8] Shobit Omar, Eric D. Wachsman, and Juan C. Nino, “Sm3+ and Nd3+ Co-Doped Ceria-Based Electrolyte Materials”, 32nd International Conference & Exhibition on Advanced Ceramic & Composites, Daytona Beach, Florida, USA, January 27-February 1, 2008.

    [7] Shobit Omar, Eric D. Wachsman, and Juan C. Nino, “Design of Higher Grain Ionic Conductive Ceria Based Electrolytes”, 212th Electrochemical Society Meeting, Washington DC, USA, October 7-12, 2007.

    [6] Shobit Omar, Eric D. Wachsman, and Juan C. Nino, “Design of Higher Grain Ionic Conductive Ceria Based Electrolytes for Solid Oxide Fuel Cells Application”, 2007 Gordon Research Conference, Andover, New Hampshire, USA, August 5-11, 2007.

    [5] Shobit Omar, Hassan El-Shall, Eric D. Wachsman, and Juan C. Nino, “Microstructural Effects on the Grain Ionic Conductivity of Gd0.10Ce0.90O2-”, 31st International Conference & Exhibition on Advanced Ceramic & Composites, Daytona Beach, Florida, USA, January 21-26, 2007.

    [4] Shobit Omar, Hassan El-Shall, Eric D. Wachsman, and Juan C. Nino, “Effect of Microstructure on the Grain Ionic Conductivity of Ceria Based Electrolytes”, 2006 MRS Fall Meeting, Boston, Massachusetts, USA, November 27-December 1, 2006.

    [3] Shobit Omar, Eric D. Wachsman, and Juan C. Nino, “A Co-Doping Approach Towards Enhanced Ionic Conductivity in Fluorite-Based Electrolytes”, European Materials Research Society Spring Meeting, Nice, France, May 29-June 2, 2006.

    [2] Shobit Omar, Eric D. Wachsman, and Juan C. Nino, “Effect of Co-Doping on the Electrical Properties of Ceria Electrolytes”, 30th International Conference & Exhibition on Advanced Ceramic & Composites, Cocoa Beach, Florida, USA, January 22-27, 2006.

    [1] Shobit Omar, Eric D. Wachsman, and Juan C. Nino, “Development of Higher Ionic Conductivity Ceria Based Electrolytes”, 208th Electrochemical Society Meeting, Los Angeles, California, USA, October 16-21, 2005.