Dr. K. Chandramani Singh

Associate Professor

M. Sc., Ph.D. - University of Delhi

Physics Department, Sri Venkateswara College

Research Projects obtained (as Principal Investigator) :

1. Ferroelectric and Piezoelectric properties of modified Barium Titanate ceramics Cost : Rs 28,44,000.00

Funding Agency : DST

Status: Ongoing (2015-2018)

2. Development of lead free alkaline niobate based Piezoceramics Cost : Rs 31,96,255.00

Funding Agency : DST

Status: Completed (2012-2015)

3. Synthesis of lead free piezoelectric materials from nanoceramic powders Cost : Rs. 9,85,300.00

Funding Agency : UGC

Status : Completed (2008-2011)

Research papers published in refereed International Journals

1. Control of Coring Effect in BaTi4O9 Microwave Dielectric Ceramics by Doping with

Mn4+

Radhapiyari Laishram, Roopam Gaur, K. Chandramani Singh, Chandra Prakash, Ceramics

International, (Elsevier, ISSN: 0272-8842), 42(4), 5286–5290 (2016).

2. Dependence of Dielectric Properties on Sintering Conditions of Lead Free KNN

Ceramics Modified with Li-Sb

Roopam Gaur, K. Chandramani Singh, Radhapiyari Laishram, International Journal of

Chemical, Nuclear, Materials and Metallurgical Engineering, (World Academy of Science,

Engineering and Technology, ISSN: 1307-6892), 9(5), 768-771 (2015)

3. Effect of sintering parameters on the electrical and the piezoelectric properties of

double-calcined (K0. 48Na0. 48Li0. 04)(Nb0. 96Sb0. 04) O3 nanopowders

Roopam Gaur, K. Chandramani Singh, Radhapiyari Laishram, Journal of the Korean

Physical Society, (The Korean Physical Society, ISSN: 0374-4884(print), ISSN: 1976-

8524(online)), 66(5), 800-805 (2015).

4. Effect of Ball Milling on the Electrical and Piezoelectric Properties of

(K0.485Na0.485Li0.03)(Nb0.96Sb0.04)O3 Ceramics

Roopam Gaur, K. Chandramani Singh, Radhapiyari Laishram, International Journal of

ChemTech Research, (Sphinx Knowledge House, ISSN: 0974-4290 CODEN (USA):

IJCRGG), 7(2), 673-677 (2015).

5. Effect of High-Energy Ball Milling on the Electrical and Piezoelectric Properties of

(K0.5Na0.5)(Nb0.9Ta0.1)O3 Lead-Free Piezoceramics

Chongtham Jiten, K. Chandramani Singh, Radhapiyari Laishram, International Journal of

Civil, Architectural, Structural and Construction Engineering, (World Academy of Science,

Engineering and Technology, ISSN: 1307-6892), 9(1), 11-14, (2015).

6. Enhanced piezoelectric properties in vanadium-modified lead-free

(K0.485Na0.5Li0.015)(Nb0.88Ta0.1V0.02)O3 ceramics prepared from nanopowders

Roopam Gaur, Apurva Dhingra, Soham Pal and K. Chandramani Singh, Journal of Alloys

and Compounds, (Elsevier, ISSN: 0925-8388) 625, 284-290 (2015)

7. Piezoelectric properties of (K0.5Na0.5)1-xLix(Nb0.96Sb0.04)O3 ceramics prepared from

nanocrystalline powders

Roopam Gaur and K. Chandramani Singh, Ceramics International, (Elsevier, ISSN: 0272-

8842), 41 (1), 1413-1420 (2015).

8. Piezoelectric and dielectric properties of (K0.485Na0.485Li0.03)(Nb0.96Sb0.04)O3 ceramics

prepared from nanopowders Roopam Gaur, K. Chandramani Singh, Radhapiyari Laishram, Advanced Science Letters

(American Scientific Publishers, ISSN: 1936-6612), 20, 1159-1162 (2014)

9. Lead-free vanadium-substituted (K0.485Na0.5Li0.015)(Nb0.9Ta0.1)O3 piezoceramics

synthesized from nanopowders

Roopam Gaur, Maitreyi Sangal, Arpit Dwivedi and K. Chandramani Singh, Journal of

Materials Science: Mater. Electron (Springer, ISSN: 0957-4522), 25, 3195–3202 (2014).

10. Positron Lifetime and Electrical Conductivity Studies of Bicontinuous Phase in

(TTAB+Pentanol)/Water/n-Octane Reverse Micellar System K. Chandramani Singh, R. Yadav, P.H. Khani, Molecular Crystals and Liquid Crystals

(Taylor & Francis, ISSN: 1542-1406), 596, 69-75, (2014).

11. Size effect on piezoelectric properties of barium stannate titanate ceramics prepared

from nanoparticles K. Chandramani Singh and Chongtham Jiten, Journal of Materials Science: Mater.

El. (Springer, ISSN: 0957-4522 (print), 1573-482X (online)), 24, 4247-4252 (2013).

12. Study of Bicontinuous Phase in (TTAB+Pentanol)/Water/n-Octane Reverse Micellar

System using Positron Lifetime Spectroscopy K. Chandramani Singh, R. Yadav, and P.H. Khani, Journal of Physics: Conf. Ser.,

(Institute of Physics Publishing, ISSN :1742-6588 (print), 1742-6596 (online)), 443, 012046

(2013).

13. Structural and piezoelectric properties of barium-modified lead-free

(K0.455Li0.045Na0.5)(Nb0.9Ta0.1)O3 ceramics Roopam Gaur, K. Chandramani Singh and Radhapiyari Laishram, Journal of

Materials Science, (Springer, ISSN: 0022-2461(print), 1573-4803(online)), 48, 5607–5613

(2013).

14. Production of BaTiO2 nanocrystalline powders by high energy milling and piezoelectric

properties of corresponding ceramics K. Chandramani Singh and Chongtham Jiten, Key Engineering Materials, (Trans Tech

Publications, ISSN: 1662-9795), 547, 133-138 (2013).

15. Location of Phase Boundaries of Lyotropic Liquid Crystal Employing Positron

Lifetime Spectroscopy and Electrical Conductivity Measurement R. Yadav, K. Chandramani Singh, S.R. Choudhary

and P.C. Jain, Materials Science Forum

(Trans Tech Publications, ISSN: 1662-9752),733, 127-131 (2013).

16. Barium titanate nanoparticles produced by planetary ball milling and piezoelectric

properties of corresponding ceramics K. Chandramani Singh and A. K. Nath, Materials Letters (Elsevier, ISSN: 0167-577X) 65,

970–973 (2011).

17. Structural, electrical and piezoelectric properties of nanocrystalline tin-substituted

barium titanate ceramics K. Chandramani Singh, A.K. Nath, Radhapiyari Laishram and O. P. Thakur, Journal of

Alloys and Compounds, (Elsevier, ISSN: 0925-8388) 509, 2597–2601 (2011).

18. Lead-free piezoelectric ceramics manufactured from tantalum-substituted potassium

sodium niobate nanopowders K. Chandramani Singh and Chongtham Jiten, Materials Letters (Elsevier, ISSN: 0167-

577X) 65, 85-88 (2011).

19. Electrical and Piezoelectric properties of Lead-Free (K0.5Na0.5)(Nb0.9Ta0.1)O3 Ceramics

prepared from Nanopowders Chongtham Jiten, A. K. Nath, K. Chandramani Singh, Radhapiyari Laishram, O. P. Thakur

and D. K. Bhattacharya, Integrated Ferroelectrics (Taylor & Francis, ISSN 1058-4587

(Print), 1607-8489 (Online)) 116:1-7 (2010).

20. Ferroelectric, piezoelectric and electrostrictive properties of Ba(Ti1-xSnx)O3 ceramics

obtained from nanocrystalline powder A.K. Nath, K. Chandramani Singh, Radhapiyari Laishram and O. P. Thakur, Materials

Science and Engineering B, (Elsevier, ISSN: 0921-5107) 172, 151-155 (2010).

21. Structure and electrical properties of Li and Ta substituted K0.5Na0.5NbO3 lead-free

piezoelectric ceramics prepared from nanopowders K. Chandramani Singh,

Chongtham Jiten, Radhapiyari Laishram, O. P. Thakur and D. K.

Bhattacharya, Journal of Alloys and Compounds, (Elsevier, ISSN: 0925-8388) 496, 717-722

(2010).

22. Influence of ball milling parameters on the particle size of Barium Titanate

nanocrystalline powders A.K. Nath, Chongtham Jiten and K. Chandramani Singh, Physica B: Condensed Matter

(Elsevier, ISSN: 0921-4526), 405, 430-434 (2010).

23. Effect of ball milling time on the electrical and piezoelectric properties of barium

titanate ceramics A. K. Nath, Chongtham Jiten, K. Chandramani Singh, Radhapiyari Laishram, O. P. Thakur

and D. K. Bhattacharya, Integrated Ferroelectrics (Taylor & Francis, ISSN 1058-4587

(print), 1607-8489 (online)) 115:1-8 (2010).

24. On the Study of Liquid Crystalline Materials using Positron Annihilation Spectroscopy K. Chandramani Singh, Physica Status Solidi C (Wiley-VCH Verlag, ISSN (printed): 1610-

1634, ISSN (online): 1610-1642) 6, No. 11, 2482–2486, (2009).

25. Study of Molecular Motions in Liquid Crystal Forming Compounds using Positron

Lifetime Spectroscopy K. Chandramani Singh, R. Yadav, M. Sharma, and P. C. Jain, Physica Status Solidi C

(Wiley-VCH Verlag, ISSN (printed): 1610-1634, ISSN (online): 1610-1642), 6, No. 11,

2490–2492, (2009).

26. A comparative study of transformation of micellar structures in CTAB and TTAB

binary systems using positron lifetime spectroscopy R. Yadav, K. Chandramani Singh, S.R. Chaudhary, P.H. Khani and P.C. Jain, Physica Status

Solidi C (Wiley-VCH Verlag, ISSN (printed): 1610-1634, ISSN (online): 1610-1642), 6,

No. 11, 2493–2496, (2009).

27. Investigation of molecular modes in K18 employing Positron lifetime spectroscopy K. Chandramani Singh and P.C. Jain, Physica B: Condensed Matter (Elsevier, ISSN: 0921-

4526), 388, 1-2, 183-189, (2007).

28. Detection of bicontinuous phase in some reverse micellar systems by positron lifetime

spectroscopy Ramesh Yadav, K. Chandramani Singh, S.R. Choudhary and P.C. Jain, Physica Status Solidi

C (Wiley-VCH Verlag, ISSN (printed): 1610-1634, ISSN (electronic): 1610-1642), 4, 10,

3785-3788, (2007)

29. Study of molecular motions in two liquid crystal forming compounds employing PLS K. Chandramani Singh, M. Sharma, and P. C. Jain, International Journal of Modern Physics

B (World Scientific Publishing Company, ISSN: 0217-9792 (print) ISSN: 1793-

6578(online)), 20, 14, 2019-2034, (2006).

30. Some structural transformations in TTAB aggregated ternary systems as seen by

positron lifetime spectroscopy K. Chandramani Singh, P. H. Khani, R. Yadav and P. C. Jain, Colloids and Surfaces A:

Physiochemical and Engineering Aspects (Elsevier, ISSN: 0927-7757), 254, 1-3, 63 (2005).

31. Phase diagram studies in two surfactant ternary systems employing positron

annihilation spectroscopy K. Chandramani Singh, P. H. Khani, R. Yadav, and P. C. Jain, Journal of Colloid and

Interface Science (Elsevier, ISSN: 0021-9797), 282, 1, 176 (2005).

32. Positron lifetime spectroscopy as a tool for studying molecular motions in n-p-

ethoxybenzylidene-p-butylaniline M. Sharma, K. Chandramani Singh and P. C. Jain, Materials Science Forum (Trans Tech

Publications, ISSN: 1662-9752), 445-446, 244 (2004).

33. Two types of lamellar phase in TTAB/water/pentanol system as detected by positron

lifetime spectroscopy P. H. Khani, R. Yadav, K. Chandramani Singh and P. C. Jain, Materials Science Forum

(Trans Tech Publications, ISSN: 1662-9752), 445-446, 316 (2004).

34. Phase transformations in some homologues of 4-n-alkyl-4′-cyanobiphenyls investigated

by positron annihilation spectroscopy M. Sharma, C. Kaur, J. Kumar, K. Chandramani Singh and P. C. Jain, Journal of Physics:

Condensed Matter (Institute of Physics Publishing, ISSN 0953-8984 (Print). ISSN 1361-

648X (Online)), 13,7249(2001).

35. Molecular dynamics in M18 and EBBA seen by positron annihilation lifetime

spectroscopy M. Sharma, K. Chandramani Singh and P.C. Jain, Materials Science Forum (Trans Tech

Publications, ISSN: 1662-9752), 363-365, 389(2001).

36. Temperature-dependent studies in some homologues of alkyloxy cyanobiphenyls

employing positron lifetime measurements M. Sharma, C. Kaur, K. Chandramani Singh and P.C. Jain, International Journal of Modern

Physics B (World Scientific Publishing Company, Print ISSN: 0217-9792 Online ISSN:

1793-6578), 14,18, 1927(2000).

37. Study of molecular motions in alkyl cyanobiphenyls using positron lifetime

spectroscopy K. Chandramani Singh and P.C. Jain, Structural Chemistry (Springer, Print ISSN: 1040-0400;

Online ISSN: 1572-9001), 7, 3, 215(1996).

38. Supercooling studies in n-p-cyano-p-heptyl biphenyl using positron annihilation

spectroscopy K. Chandramani Singh and P. C. Jain, Journal de Physique IV (EDP Sciences, ISSN. 1155-

4339), C4, 3, 311 (1993).

39. Positron annihilation in some alkyl and alkyloxy cyanobiphenyls J. Kumar, C. Kaur, K. Chandramani Singh and P. C. Jain, Materials Science Forum (Trans

Tech Publications, ISSN: 1662-9752), 105-110, 1625 (1992).

Books published

1. Title : Basic Physics

Author : K. Chandramani Singh

Publisher: PHI Learning Private Limited

Particulars: ISBN-978-81-203-3708-4, Year - 2009

2. Title : Physics

Authors : K. Chandramani Singh, A.K. Chaudhary, Manish Panwar

Publisher: Cambridge University Press India Pvt. Ltd.

Particulars: ISBN 81-7596-343-3, Year - 2007.