The field of electroceramics has found diversified applications ranging from the probing of ocean beds to deep space in the form of smart sensors and energy convertors. Ceramic materials that have been specially formulated for specific electrical, electromagnetic and optical properties can be tailored for their use as insulators, ferroelectric materials, highly conductive ceramics, electrodes, MEMS, energy convertors, sensors and actuators, etc. The quest to push performance boundaries through further study into the fundamental aspects of electroceramics and their commercial applications is essential for the advancement of this science and technology.
In our research lab a number of electroceramics based on PZT and BT with Sm, La, Mn, Ca, Zr, Sr etc. substitutions have been synthesized by the conventional ceramic route and mechanochemical processing using conventional sintering and microwave sintering. Also a number of material series based on lithium ferrite and nickel ferrite substituted with Ti, Zn, Mn, La etc. have been synthesized. Composites of ferrite and ferroelectric material have also been prepared. All these materials are characterized for physical, structural, dielectric, ferroelectric, piezoelectric, magnetic properties. The work has published in journals of international repute and proceeding of national and international conferences.
Research Group
- Two students have completed research work for their PhD degree and have submitted their theses.
- Three students are working for their PhD degree.
- Four Students carried out research work for their M.Phil. Degree.
Major Research Projects
- Major Research Projects (completed = 3)
- Major Research Project (ongoing = 1)
Ongoing research work
Ferroelectrics Ceramics (Preparation and Characterization)
- Lead Titanate based Ferroelectrics
- Barium Titanate based Ferroelectrics
Ferrites (Preparation and Characterization
- Ni based Ferrites
- Li based Ferrites
Composites (Preparation and Characterization)
- Ferroelectric-Ferrite composites
PZT-NiFe2O4 composites BST-NiFe2O4 composites
- Ferroelectric-Glass composites
Facilities available in Electroceramics Research Lab, GVMGC
Processing facilities
1. Digital Weighing Machine (0.001g
2. For mixing and reduction of particle size
- Conventional Ball mill
- High Energy Ball mill (for Mechanochemical Activation)
- High density milling media (Zirconia/Tungsten/Alumina)
3. For Drying purposes
- Electric oven
4. For shaping the material
- Hydraulic Press (uniaxial pressure up to 10 ton and discs of different sizes.)
5. Furnaces for Calcination and Sintering
- Programmable furnaces up to 1450oC 2 No.
- Microwave furnace upto 1450 oC (for Microwave processing)
Measurement Facilities
- LCR Meter: Agilent 4263B with Computer interfacing
- DC conductivity Measurements using Piccoammeter-6485 Keithley as function of temperature upto 600 oC.
- Ferroelectric hysteresis loop tracer
- Electrical poling Unit
- Automatic BH loop tracer for magnetic materials.
- Set up for measurement of Curie temperature of ferrites.
- Piezoelectric charge coefficient (d33 measurement Set up)
- Electromechanical coupling factor (kp measurement Set up)
All the above equipments are powered by 5 kVA on-line UPS and 62.5 kVA generator.
9. Other supporting facilities available are:
Distillation plant, ultrasonic cleaner, required chemicals and high temperatures alumina and platinum crucibles, arrangement for lapping/polishing.
Publications
International Journals
1. Dielectric and Piezoelectric Properties of PZT Substituted with smamarium, J.K. Juneja, Chandra Prakash, OP Thakur and TP Sharma, Ferroelectric Letters, 29 (2002 11. )
2. Influence of Samarium Substitution on Structural, Dielectric and Piezoelectric Properties of PZT Ceramics, J.K. Juneja, OP Thakur and Chandra Prakash, SPIE, 5062 (2003 197.)
3. Investigations on Sm and Nb Substituted PZT Ceramics, Chandra Prakash and J.K. Juneja, Modern Physics Letters B, 20 (2006 1879.
4. Relaxor Ferroelectric Behavior of La substituted BPZT ceramics, J.K. Juneja, Parveen Kumar, Sangeeta Singh, Chandra Prakash and K.K. Raina, Ceramics International, 36, 1277–1281, 2010.
5. Synthesis and Dielectric Properties of Substituted Barium Titanate Ceramics, Parveen Kumar, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina, Journal of Alloys and Compound, 489, 59-63, 2010.
6. Dielectric Behavior of La Substituted BPZT Ceramics, Parveen Kumar, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina, Physica B, 404, 2126-2129, 2009.
7. Ferroelectric Properties of Substituted Barium Titanate Ceramics, Parveen Kumar, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina, Physica B, 404, 1752-1756, 2009.
8. Influence of Samarium Substitution on Dielectric Properties of Barium Titanate Based Ceramics, Parveen Kumar, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina, Modern Physics Letters B, 23, 1-7, 2009.
9. Effect of Two-Stage Sintering on Dielectric and Ferroelectric Properties of Ba0.80Pb0.20TiO3 Ceramics, Parveen Kumar, Pratibha Singh, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina, Ferroelectric Letters, 36, 92-101, 2009.
10. Effect of Zirconium Substitution on Structural and Dielectric Properties of Ba0.80Pb0.20TiO3 Ceramics, Parveen Kumar, Pratibha Singh, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina, Integrated ferroelectrics, 122 (2010 16.
11. Structural and Ferroelectric Properties of Lanthanum Modified BPZT Ceramics, Parveen Kumar, J.K. Juneja, Sangeeta Singh, Chandra Prakash and K.K. Raina, Materials Chemistry and Physics, 125 (2011 660.
12. Influence of Calcium Substitution on Structural and Electrical Properties of Substituted Barium Titanate, Parveen Kumar, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina, Ceramics International, 37 (2011 1697.)
13. Structural, Dielectric and Ferroelectric Properties of Mn doped Ba0.80Pb0.20Ti0.90Zr0.10O3 ceramics, Parveen Kumar, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina, Ferroelectric Letters, 37 (2010 110. )
14. Dielectric and Ferroelectric Properties of BST and Ni-Zn Ferrite Composites, Renu Rani, Parveen Kumar, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina, Integrated ferroelectrics, 122 (2010 38.)
15. Improved Properties of BaTiO3 Ceramics Prepared by Ultrasonic mixing, Parveen Kumar, Pratibha Singh, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina, Integrated ferroelectrics, 122 (2010 114).
16. Ferroelectric Properties of Microwave Processed PZT-NiZn Ferrite Composites, Rekha Rani, Parveen Kumar, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina, Integrated ferroelectrics, 122 (2010 45).
17.Improved properties of Li-Mn-Ti ferrites by microwave sintering, Mamata Maisnam, Sumitra Phanjoubam, Parveen Kumar, J.K. Juneja, Ashok Kumar and Chandra Prakash, Integrated ferroelectrics, 122 (2010 31).
18. Effects of Samarium Doping on the Ferroelectric Properties of Modified Lead Zirconate Titanate Ceramics, Pratibha Singh, Sangeeta Singh, J.K. Juneja, R.P. Pamt, Chandra Prakash and K.K. Raina, Integrated ferroelectrics, 122 (2010 23 ).
19. Effect of Samarium substitution on dielectric properties of (Pb(Zr, Ti, Fe, NbO3 type ceramic system, Pratibha Singh, Sangeeta Singh, J.K. Juneja and Chandra Prakash, Ceramics International, 35 (2009 3335).
20. Dielectric studies of samarium modified (Pb(Zr, Ti, Fe,NbO3ceramic system, Pratibha Singh, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina, Modern Physics Letters B, 23 (2009 1437).
21. Synthesis and ferroelectric properties of La-substituted PZFNT, Pratibha Singh, Sangeeta Singh, J.K. Juneja, R.P. Pamt, Vinod Kumar, Chandra Prakash and K.K. Raina, Physica B, 405 (2010 10).
22. Dielectric Behavior of Pb Substituted BZT Ceramics, Parveen Kumar, J.K. Juneja, Sangeeta Singh, Chandra Prakash and K.K. Raina, Bulletin of Materials Science, in press
23. Effect of Two-stage Sintering on Dielectric Properties of BaTi0.9Zr0.1O3 Ceramics, Rekha Rani, Renu Rani, Parveen Kumar, J.K. Juneja, Chandra Prakash and K.K. Raina, Phase Transitions, In Press
24. Structural, Dielectric and Ferroelectric Properties of Ba0.9Sr0.1TiO3 and Mn doped Ni0.8Zn0.2Fe2O4 Composites, Renu Rani, Parveen Kumar, Sangeeta Singh, J.K. Juneja, K.K. Raina and Chandra Prakash, Ceramics International, Accepted.
25. Dielectric and Ferroelectric Properties of Strontium Substituted BaTiO3 and Mn- doped Ni-Zn Ferrite Composites, Renu Rani, Parveen Kumar, Sangeeta Singh, J.K. Juneja, K.K. Raina and Chandra Prakash, Bulletin of Material Sciences, Communicated.
26. Dielectric Properties of Zr substituted BST ceramics, Renu Rani, Sangeeta Singh, J.K. Juneja, K.K. Raina and Chandra Prakash, Ceramics International, Accepted.
27. Dielectric properties of La doped 0.95 PZT-0.05 NZF composites, Rekha Rani, Parveen Kumar, J.K. Juneja, K.K. Raina and Chandra Prakash, Advances in Condensed Matter Physics, Accepted
28. Improved Dielectric Properties via Mechano-Chemical Activation in Ba0.80Pb0.20TiO3 Ceramics, Parveen Kumar, Renu Rani, Sangeeta Singh, J.K. Juneja, K.K. Raina and Chandra Prakash, AIP Proceedings, Accepted.
29. Improved Properties of Pb Based BLZT Ferroelectric Ceramics, Parveen Kumar, Sangeeta Singh, J.K. Juneja, K.K. Raina and Chandra Prakash, AIP Proceedings, Accepted.
30. Studies on dielectric and ferroelectric properties of PZT: NZF magnetoelectric composites, Rekha Rani, J.K. Juneja, K.K. Raina and Chandra Prakash, Journal of Ceramic Processing Research, Accepted.
31. Ferroelectric Properties of Rare Earth (La, Sm Substituted PZT Ceramics, Rekha Rani, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina, AIP Proceedings, Accepted.
32. Effect Of Sintering Temperature On Dielectric Properties Of Iron Defficient Nickel Ferrite Renu Rani, Sangeeta Singh, J.K. Juneja, K.K. Raina and Chandra Prakash, AIP Proceedings, Accepted.
33. Influence of Zr Substitution on Ferroelectric Properties of BST Ceramics, Renu Rani, Sangeeta Singh, J.K. Juneja, K.K. Raina and Chandra Prakash, Ferroelectric letters,Accepted
34. Structural, Dielectric and Ferroelectric Properties of Ba0.9Sr0.1TiO3 and Mn doped Ni0.8Zn0.2Fe2O4 Composites, Renu Rani, Parveen Kumar, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina, Ceramic International, Communicated.
35. Structural, Dielectric, Ferroelectric and Ferromagnetic Properties of Ba0.9Sr0.1ZrxTi1-xO3+ 5% Ni0.8Zn0.2Fe2O4 Composite, Renu Rani, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina, Ferroelectric letter, Communicated.
B. International Conferences
1. Electrical Properties of Ti Substituted Lithium Ferrites Prepared by Mechanical Alloying (International Conference on Magnetic Materials-2008) Kavita Sharma, Parveen Kumar, Sangeeta Singh, J.K. Juneja and Chandra Prakash
2. Structural and Dielectric Properties of BST Ceramics Prepared by Microwave Processing (International Symposium on Nano Materials-2009, Jalandha) Renu Rani, Rekha Gandhi, Parveen Kumar, Sangeeta Singh, J.K. Juneja, Chandra Prakash, K.K. Raina
3. Effect of Zirconium Substitution on Structural and Dielectric Properties of Ba0.80Pb0.20TiO3 Ceramics (International Conference on Electroceramics, 13-17 December-2009, New Delhi) Parveen Kumar, Pratibha Singh, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina.
4. Improved Properties of BaTiO3 Ceramics Prepared by Ultrasonic mixing (International Conference on Electroceramics, 13-17 December-2009, New Delhi) Parveen Kumar, Pratibha Singh, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina.
5. Dielectric and Ferroelectric Properties of BST and Ni-Zn Ferrite Composites (International Conference on Electroceramics, 13-17 December-2009, New Delhi) Renu Rani, Parveen Kumar, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina).
6. Ferroelectric Properties of Microwave Processed PZT-NiZn Ferrite Composites (International Conference on Electroceramics, 13-17 December-2009, New Delhi Rekha Gandhi, Parveen Kumar, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina).
7. Improved properties of Li-Mn-Ti ferrites by microwave sintering (International Conference on Electroceramics, 13-17 December-2009, New Delhi) Mamata Maisnam, Sumitra Phanjoubam, Parveen Kumar, J.K. Juneja, Ashok Kumar and Chandra Prakash).
8. Effects of samarium doping on the ferroelectric properties of modified lead zirconate titanate ceramics. (International Conference on Electroceramics, 13-17 December-2009, New Delhi) Pratibha Singh, Parveen Kumar, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina.
9. Ferroelectric Properties of Sm Substituted PZFNT Ceramics, (International Symposium on Nano Materials-2009, Jalandhar) J.K. Juneja Pratibha Singh, Sangeeta Singh, Chandra Prakash and K.K. Raina
10. Dielectric and Ferroelectric Properties of Strontium Substituted BaTiO3 and Mn-doped Ni-Zn Ferrite Composites(IWSSCGGC-2010, PuneRenu Rani, Parveen Kumar, Sangeeta Singh, J.K. Juneja, K.K. Raina and Chandra Prakash).
11. Study on Microwave Processed PZT-Ni-Zn Ferrite Magneto electric Composites Rekha Gandhi, Pratibha Singh, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina (IWSSCGGC-2010, Pune).
12. Study of Ferroelectric Hysteresis in Mn-Substituted Modified Lead Zirconate Titanate (60/40(IWSSCGGC-2010, Pune) Pratibha Singh, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina).
C. National conferences:
1. Structural and Dielectric Properties of BPZT ceramics (NSE-2007, GVMGC, Sonipat) Parveen Kumar, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina).
2. Two Stage Sintered substituted Barium Titanate Ceramics (NSFD-2008, Thapar Uni, Patiala) Parveen Kumar, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina.
3. Effect of La doping on the dielectric properties of BPZT Ceramics (NCPMS-2008, GJU, Hissar) Parveen Kumar, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina.
4. “Dielectric Behaviour of Microwave Sintered BST Ceramics” Renu Dahiya, Rekha Ghandhi, Parveen Kumar, Sangeeta Singh, J.K. Juneja, Chandra Prakash, K.K. Raina (Recent trends in Multifunctional oxide Materials, Osmania University, Hyderabad, July 17-18, 2009).
5. Synthesis and Dielectric Behaviour of Sm Substituted Barium Titanate Based Ceramics (EPSDP-2009 Abhohar) Parveen Kumar, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina
6. Influence of Sm Substitution on Ferroelectric Properties of PZTFN Ceramics, (Recent trends in Multifunctional oxide Materials, Osmania University, Hyderabad, July 17-18, 2009). Pratibha Singh, , Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina ).
7. Effect of Lanthanum doping on ferroelectric and dielectric properties of modified PZT, (NCPMS-2008, GJU, Hissar) Pratibha Singh, , Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina
8. Dielectric Behaviour of Lanthanum Substituted PZT, (NSFD-2008, Thapar Uni, Patiala) Pratibha Singh, , Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina.
9. Structural and Ferroelectric Properties of Samarium Substituted PZTFN, ( NSE-2007, GVMGC, Sonipat) Pratibha Singh, , Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina).
10. Dielectric Behaviour of Samarium Substituted Modified PZT, RAIM-2008,Hamirpur Pratibha Singh, Sangeeta Singh, J.K. Juneja, Chandra Prakash and K.K. Raina