Research Activities

List of Research papers Published

Paper Published

1. Lattice Dynamics of Potassium Chloride and Potassium Fluoride using three body force shell model, Proc. Nat. Acad. Sci. Ind. 62 (A), (1992)97.

2. Lattice dynamics of high Tc superconductors ErBa2Cu3O7-d,,Aust. Journal of Physics47(1994) P104-108.

3. Lattice dynamics of high Tc superconductors NdBa₂Cu₃O_7-d, Proc. Indian Nat. Sci. Acad. 62(A),(1996)p539.

4. FTIR spectra of Bismuth family of superconductors Bi₂Sr₂Ca_n-1Cu_2n+4+d, Journal of Materials Science (USA)34 (1999) p3241-3247

5. Phase formation and structural disorder in R1.85Ce0.15CuO4(R= Nd, Pr, Sm, Eu and Gd), Materials Research Bulletin 36(2001)69-80

6. FTIR spectra ofcerium doped electron superconductors R1.85Ce0.15CuO4(R= Nd, Pr, Sm, Eu and Gd) Talanta (Elsevier)53(2001)733-739

7. Semiconductor to metallic phase transition in nickel dopedCo0.5NixFe(0.5-x)Fe2O4, Journal of superconductivity and novel magnetism (Springer) 26(2013)173-182

8. Absence of free carrier and paramagnetism in cobalt dopedZnO nanoparticles synthesized by low temperature using citrate sol-gel route, .Applied Nanoscience 3(2013)383-388 (Springer)

9. Unusual metallic behavior innanostructured cobalt ferrite at superparamagnetic regime, Journal of Applied Physics(AIP) 112(2012)063926

10. High temperature electrical transport properties of Nanophasic Ba_1-xSb_xMnO_3. International Journal of Engineering Science and Technology 5(2013)1205-1213

11. Metal –insulator Phase transition and structural stability in Sb doped CaMnO3, International Journal of materials science and applications 2(4) (2013)128- 135.

12. Metallic magnetism and change of conductivity in the nanoto bulk transition of cobalt ferrite, Journal of Applied Physics(AIP) 114(2013)183905

13. Room Temperature Ferromagnetism in dual doped (Mn2+,Ni2+)ZnO codoped withLi1+ prepared using EDTA sintered at low temperature, Journal of materials science and Technology (2013)1-5(Elsevier)

14. Enhancement of magnetisation with decreased coercivity in nickel doped cobalt ferrite by coating with oleic acid, Magnetohydrodynamics, 9(2013)191-196

15. Thermal ionizationinduced metal-semiconductor transition and room temperature ferromagnetism in trivalentdoped ZnO codoped with lithium, JOURNAL OF APPLIED PHYSICS 115, 093902 (2014)

16.Unusual occupancy of more Fe3+ ions at A-site and enhanced metallic magnetization in nano Mg0.5Zn0.5Fe2O4, Journal of Molecular Structure 1076 (2014) 105–114

17.Structural, optical and intrinsic defects induced magnetic properties of the ZnO:Fe nanoparticles, Journal of Materials Science, Electronic Materials,27 (2016) p 5549-5556

18.Room temperature ferromagnetism in Ist group elements codoped ZnO:Fe nanoparticles by co-precipitation method,Physica B 487 (2016) 102-108

19.Quantification of charge carriers participating antiferromagnetic to weak ferromagnetic phase transition in Na doped LaFeO3 nano multiferroics

20.Unusual Transition of Electrical andMagnetic Properties in the Nano to Bulk Transformation of Co-Zn Ferrites

A Arunkumar, D Vanidha, R Kannan, M Shanmugam

Journal of Superconductivity and Novel Magnetism, Vol.33, pp1-15, 2020.

https://doi.org/10.1007/s10948-020-05448-8

Conference Presentation

1. Presented paper in MRSI conference held at IIT madras 13^th February 1998MRSI conference held at IIT madras 13^thFebrury 1998

2. Presented paper inIX Nat, Symposium on Ultrasonics ABS No. PU27 Pondicherry University (1998)

3. VRH in electron doped La_1-xSb_xMnO₃’in UGC sponsored national seminar on Emerging trends in molecular Physics’, on 8&9^th March 2004 held at Annamalai University

4. Paper entitled ‘Spin-Spin interaction in Fe doped La_1-xCa_x (Fe _yMn_1-y)O₃ UGC sponsored national seminar on ‘Modern Trends in Applied Spectroscopy ’, on March 25 &26, 2004 held at Faculty of Engg &Tech. Annamalai University

5. Paper entitled ‘Effect of particle size in the CMR property of Ba_1-xSb_xMnO₃ National conference on Application oriented Nanomaterials (NanoMat2005), on March 10&11, 2005 held at Alagappa university, Karaikudi

6. Effect of sintering and high temperature electrical properties of Sr_1-xSb_xMnO₃ National conference on smart electroceramics (NCSE 2007) at Centre for materials for electronics technology (C-MET) Thrissur, during March 8-9, 2007

7. CMR properties of sol-gel derived nano-phasic Ba_1-xSb_xMnO₃ ICONAME,2008

8. Ac conductivity and dielectric studies of particle size dependent nano cobalt ferrites(Poster) 5^th DAE-BRNS conference on Pulsed laser deposition and nano structured materials, at IIT Madras during December 2-4, 2009

9. Synthesis and AC conductivity studies of Mg-Zn Ferrite Nano particles, 3^rd National Symposium for Materials Research Scholars, Department of Metallurgical Engineering and Material Science, IIT Bombay.,7^th AND 8^th May 2010

10. Synthesis, Characterization and Electrical Properties of Ni_1-xCu_XFe₂O₄,3rd National Symposium for Materials Research Scholars, Department of Metallurgical Engineering and Material Science, IIT Bombay, 7^th AND 8^th May 2010.

11. Effect of Lithium co-doping on dual acceptor doped ZnO, 55^th DAE, Solid State Physics Symposium published in AIP.Conf.Proc.1349(2011)1133-1134

12. Presence of Nitrogen related complexes in ZnO synthesized using EDTA, 56^th DAE, Solid State Physics Symposium published in AIP.Conf.Proc.1447(2012)323-324

13. Enhanced magnetization with decreased coercivity in core-shell structure of nickel doped Cobalt ferrite,13^th International conference on magnetic fluids(ICMF)CSIR-National Physical Laboratory, New Delhi,7^th-11^th January 2013

14. No acceptor enhanced RTFM in nitrogen doped ZnO synthesized by ammonialysis 57^th DAE, Solid State Physics Symposium, published in AIP.Conf.Proc.1512 (2013)178-179

15. Decreaseof metal to semiconducting phase transition temperature with increase ofparticle size in Nickel ferrite.58^th DAE Solid State Physics Symposium (2013), Thapar University, Patiala AIP.Conf.Proc.1591 (2014)320

Talks delivered

Metallicity in ferrites

ferromagnetism in non-magnetic materilas