Dr. J KRISHNAMURTHY

 Assistant Professor,

Department of Physics,

NIT -Andhra Pradesh-534101

E-Mail:  krishnamurthy@nitandhra.ac.in            krishna.jk1@gmail.com,

Phone                                       :  +917975624892

EDUCATIONAL QUALIFICATIONS:

 Ph.D. in Physics, awarded from Indian Institute of Technology, Kharagpur-721302, India in March 2015.

 Title of thesis:  "Multiferroicity, Phase separation and magnetic field-driven Phenomena in R2CoMnO6 (R= La, Gd, Y) and La2- xSrxCoMnO6systems”  

M. Sc. in Physics, 2006 from Sri Venkateswara University, Tirupati, Andhra Pradesh-517507, India.

 B. Sc. in Physics, 2003 from Sri Venkateswara Arts College, Tirupati, Andhra Pradesh-517507, India.

 AWARDS/FELLOWSHIP/RECOGNITION

 INSPIRE FACULTY 2016 Award from Department of Science & Technology, Govt. of India.

 Dr. D. S. Kothari Postdoctoral Fellowship 2015, from University of Grants Commission, New Delhi.

 Best Presentation Award, for the work “Size-dependent magnetic properties of La₂CoMnO₆” in research scholar’s day -2012 in Cryogenic Engineering Centre, IIT Kharagpur.

 For the paper “Magnetocaloric effect in La₂CoMnO₆ double perovskite system, " Best Poster Presentation Award at DAE-SSPS-2011, SRM University, Chennai, India.

 Received Junior Research Fellowship (JRF) to work on the project entitled “Synthesis and multiferroic properties of AFe₁₂O₁₉ (A= Ba, Sr) nanoparticles reinforced polymer nanocomposites for space applications (NAS), sponsored by CSIR, New Delhi, from July-2009 – June 31^st -2010 at Cryogenic Engineering Centre, IIT Kharagpur.

Qualified “National Eligibility Test (NET)-December 2009 in “Physical Sciences” and awarded “CSIR-UGC-Junior Research Fellowship (JRF)” to carry out advanced research in reputed institutes of India.

 Qualified “Graduate Aptitude Test in Engineering (GATE)-2009 in Physics.

 RESEARCH INTERESTS

 Magnetic-field-driven phenomena in novel multiferroic materials:

  (i)    Magnetic and dipolar ordering and the so-called "multi glass" behavior

 (ii)   Metamagnetism and phase separation

 (iii)  Magnetocaloric, electrocaloric, and multicaloric effect in multiferroic materials

 (iv)  Magnetic order drove ferroelectricity

 (v)   Conventional and spontaneous exchange bias effects, and 

 (vi)  Magnetotransport and Magnetodielectric properties at cryogenic temperatures

Sponsored Project Grants:

EXPERTISE

 Thin-film deposition techniques: Pulsed laser deposition, DC and RF sputtering, Thermal Evaporation.

 Synthesis techniques: Solid-state synthesis, Solution combustion, Sol-Gel.

 Characterization:

• Impedance spectroscopy
• High temperature and low-temperature AC, DC magnetotransport
• X-ray diffraction for bulk and thin films
• Magnetometry using Magneto-Optic Kerr effect
• Magnetometry with Physical Property Measurement system and SQUID
• Transport and Magnetotransport and multiferroic properties with Physical Property Measurement system
• Scanning Electron Microscopy
• Raman, and UV-Visible spectroscopy

Infrastructure established at NIT-ANP (those with institute funds and those from individual project funds should be specified separately)

PROFESSIONAL EXPERIENCE

 Assistant professor at NIT – Andhra Pradesh from July 2018  

 DST Inspire Faculty of Physics, at Indian Institute of Science, Bengaluru, from March 2016 to July 2018

 Dr. D S Kothari post-doctoral fellow at IISc Bengaluru from September 2015 to 01 March 2016 in the Magnetism group.

 The experience of teaching physics at an undergraduate and pre-university level for two years (2006-2008).

 Worked as JRF on hexagonal ferrites and polymer composites for Space applications at Cryogenic Engineering Centre, Kharagpur, India (2009-2010).

 Having two years (2006-2008) of teaching experience as a Lecturer for graduation students, worked at Sri Srinivasa Degree College, Madanapalli, Andhrapradesh, India.

 Teaching   at NIT-Andhra Pradesh:  

PhD guidance 

PhDs AWARDED

PhDs ongoing at NIT Andhra Pradesh as Supervisor

PG Theses Guided:

UG Theses Guided:

Publications in peer-reviewed Journals:

Research Credentials 

Section A: List of publications before joining NIT-ANP.

1.  J Krishnamurthy,PSAnilKumar,“Interface-inducedspontaneouspositiveandconventionalnegativeexchangebias effects in bilayer La0.7Sr0.3MnO3/Eu0.45Sr0.55MnO3 heterostructures”, Scientific Reports, Vol. 7(1), pp. 6919(2017)(SCI,Q1,Impactfactor3.8).
2.  J Krishnamurthy,A.Venimadhav“3d-4fexchangecouplinginducedexchangebiasandfieldinducedHopkinsonpeak effects in Gd2CoMnO6”, Journal of Alloys and Compounds, Vol no. 719, pp. 341-346, (2017) (SCI, Q1,Impactfactor 6.3).
3.  J Krishnamurthy,GJyotsna,NNileena,PSAnilKumar“Strain-inducedferromagnetismandlargemagnetoresistance of epitaxial La1.5Sr0.5CoMnO6thin films”, Journal of Applied Physics Vol. 122 (6), pp.065307,(2017)(SCI, Q2, Impact factor 2.7).
4.   K. Devi Chandrasekhar, J Krishna Murthy, A.Venimadhav and, H. D. Yang, “Magnetostructural coupling and Ferroelectricity in Ni1-xZnxCr2O4solid solutions”, Physical Review B. Vol. 94,pp. 205143, (2016) (SCI, Q1,Impactfactor 3.2).
5.   Sadan Chandra, S Sujoy, Dutta Alo, J Krishna Murthy, Venimadhav, T. Sinha, “Magnetodielectric effect and the ferroelectricity in ordered double perovskite Lu2NiMnO6”, Journal of Applied Physics, Vol. 120, pp. 134102,(2016)(SCI,Q2,Impactfactor2.7).
6.   J. Krishnamurthy, K. Devi Chandrasekhar and A. Venimadhav, “Observation of Griffiths-like phase and its tunability in La2Ni1-xCoxMnO6(0<x<1)nanoparticles”,JournalofMagnetismandMagneticMaterialsVol.418,pp.15,(2016)(SCI,Q2,Impactfactor2.5).
7.   N V Prakash Chaudhury, J Krishnamurthy, A Venimadhav, “Absence of dipolar ordering in Co doped CuO”,Solid State Communications,Vol.247,pp. 36-39,(2016)(SCI,Q2, Impact factor2.1).
8.   J.KrishnaMurthy,K.D.Chandrasekhar,H.C.Wu,H.D.Yang,J.Y.LinandA.Venimadhav,“Antisitedisorderdrivenspontaneous exchange bias effect in La2-xSrxCoMnO6(0≤x≤1)”, Journal of Physics: Condensed Matter, Vol.28(8),pp. 086003, (2015)(SCI, Q2,Impactfactor 2.7).
9.   J. Krishnamurthy, K. Devi Chandrasekhar and A. Venimadhav, “Giant magnetocaloric effect in Gd2NiMnO6 andGd2CoMnO6ferromagneticinsulators”,JournalofPhysicsD.AppliedPhysics,Vol.48,355001(2015)(SCI,Q2,Impactfactor 3.2).
10.  J.Krishnamurthy,K.DeviChandrasekhar,S.Murugavel,andA.Venimadhav,“Investigationoftheintrinsicoriginof MD effect in La2CoMnO6: Role of magnetic disorder effects”, Journal of materials chemistry C, Vol. 3, pp.836,(2015)(SCI,Q1, Impact factor 5.7).
11.  J. Magesh, P. Murugavel, J. Krishnamurthy, V. Adyam, and W. Prellier, “A study of magnetic ordering in multiferroic hexagonal Ho1-xDyxMnO3”, Journal of Applied Physics, Vol. 117, pp. 836, (2015) (SCI, Q2, Impact factor 2.7).
12.  J. Krishnamurthy, K. D. Chandrasekhar, H. C. Wu, H. D. Yang, J. Y. Lin and A. Venimadhav, “Metamagneticbehavior and effect of field cooling on sharp magnetization jumps in multiferroic Y2CoMnO6”, Europian Physics letters, Vol. 108, pp. 27013,(2014)(SCI, Q2,Impactfactor2.2).
13.  J. Krishnamurthy and A.Venimadhav, “Multicaloric effect in Y2CoMnO6multiferroic system”, Journal of Physics D. Applied Physics, Vol. 47, pp.445002, (2014)(SCI,Q2, Impact factor3.2).
14.  J.KrishnamurthyandA.Venimadhav,“MagnetizationreversalphenomenaandbipolarswitchinginLa1.9Bi0.1FeCrO6”,Physica B, Vol. 448,pp.162,(2014)(SCI, Q2, Impact factor2.8).
15.  K. Devi Chandrasekhar, J. Krishnamurthy, A.K. Das and A. Venimadhav “Dielectric and MagnetodielectricpropertiesofR2NiMnO6(R=Nd,Eu,Gd,Dy,andY)”,JournalofAmericanCeramicSociety,Vol.97,pp.2858,(2014)(SCI,Q1,Impactfactor4.186).
16.  K.DeviChandrasekhar,S.Mallesh,J.KrishnaMurthy,A.K.DasandA.Venimadhav,“Role of defects and oxygen vacancies on dielectric and magnetic properties of Pb²⁺ion doped LaFeO3 polycrystalline ceramics”,Physica B, Vol. 448, pp.304,(2014)(SCI, Q2,Impactfactor 2.8).
17.  J. Krishnamurthy and A. Venimadhav, “Giant zero-field cooled spontaneous exchange bias effect in phase separated La1.5Sr0.5CoMnO6”, Applied Physics Letters, Vol. 103, pp. 252410, (2013) (SCI, Q1, Impact factor3.5).
18.  J.KrishnamurthyandA.Venimadhav,“ReentrantclusterglassbehaviorinLa2CoMnO6nanoparticles”,JournalofApplied Physics,Vol.113, pp. 163906 (2013)(SCI, Q2,Impactfactor2.7).
19.   Venimadhav,DeviChandrasekhar,andJ.Krishnamurthy,“Intrinsicandextrinsiccontributionstomagnetodielectric effect in double perovskite La2CoMnO6 nanoparticles”, Applied nano science, Vol. 3, pp. 25-28(2013)(SCI,Q2, Impact factor 3.674).
20.    J.Krishnamurthy,C.Mitra,S.Ram,A.Venimadhav,“Temperaturedependentmagneticanddielectricproperties of M-type hexagonal BaFe12O19 nanoparticles”, Journal of alloys and compounds, Vol. 545, pp. 225,(2012)(SCI,Q1,Impactfactor6.3).
21.   J.KrishnamurthyandA.Venimadhav,“MagnetodielectricbehaviorinLa2CoMnO6nanoparticles”,JournalofAppliedPhysics,Vol. 113,pp. 024102(2012),(SCI,Q2, Impact factor 2.7).
22.   J. Krishnamurthy and A. Venimadhav, “Size-dependent magnetic properties of double perovskite La2CoMnO6nanoparticles”,American Institute of Physics (AIP)Conference Proceedings,Vol.1536, pp.no.1053(2013).
23.   J. Krishnamurthy and A. Venimadhav, “Unusual magnetodielectric response in La2CoMnO6nanoparticles”,AmericanInstitute of Physics (AIP)Conference Proceedings ,Vol. 1447,pp. no.1239 (2012).
24.   J. Krishnamurthy and A. Venimadhav, “Magnetocaloric effect in double perovskite La2CoMnO6”, American Institute of Physics(AIP)Conference Proceedings,Vol.1447, pp. no.1235 (2012).'

Section B: List of publications after joining NIT-ANP, based on the work initiated before joining NIT- ANP, with no student from NIT-ANP as co-author

1.   Ajay Tiwari, D Chandrasekhar Kakarla, Bommareddy Poojitha, Priyambada Sahoo, HL Liu, A Dixit, CW Wang, TWYen,M-JHsieh,J-YLin,JyothinagaramKrishnamurthy,YCLai,HChou,TWKuo,ArkadebPal,HDYang,Spin-phonon-chargecouplinginthetwo-dimensionalhoneycomblatticecompoundNi2Te3O8,PhysicalReviewB,Vol.8, No.075113(2023)(SCI,Q1, Impact factor 3.2).
2.  R, Rajesh kumar; J Krishnamurthy; Arout Chelvane, J; Adyam, V, “Spontaneous magnetization reversal and Positive exchange bias effect in CoFeSiB/FeCrO3heterostructures”,JournalofPhysicsD:AppliedPhysics,Vol.54,No. 50, 505004(2021) (SCI, Q2, Impact factor 3.2).
3.   J Krishnamurthy and Venimadhav Adyam, “Magnetic field-induced metamagnetic, magnetocaloric and pyro-current behaviors of double perovskite Eu2CoMnO6" in Journal of magnetism and Magnetic Materials” Vol.500,No. 166387 (2020)(SCI, Q2,Impactfactor 2.5).
4.  J Krishnamurthy, N Nileena, V S Vishnugopal, P S Anil Kumar, "Partially-disordered to frozen-state crossoverinducedmagnetocaloricpropertiesoftheantiferromagneticone-dimensionalspin-chainSr3CoIrO6”,MaterialsResearchExpress,Vol. 6,No. 056104(2019)(SCI,Q3, Impact factor 1.8).
5.  S Mallesh, J Krishnamurthy, A K Das, A Venimadhav, D C Kakarla, “Anomalous freezing of dielectric  polaronsnear magnetic ordering inmultiferroicLa0.5Bi0.5FeO3”,CeramicsInternational,Vol.45(5),No.6250-6254(2019)(SCI,Q1, Impact factor 5.1).
6.  K Devi Chandra Sekhar, J Krishnamurthy, J. -Y Lin, H C Wu, H D Yang, "Observation of oscillating likemagnetocaloriceffectinmultiferroicNi0.95Zn0.05CrO4”,JournalofAlloysandCompounds,Vol.771,No.15,PP.674-679(2019)(SCI,Q1,Impact factor 6.3).
7. J Krishnamurthy and P S Anil Kumar, “Field-cooling induced giant vertical magnetization shift in frustrated low -dimensional spin-chain Sr3NiIrO6system”, Materials Research Express, Vol. 6, No. 106101, (2019) (SCI,Q3,Impact factor 1.8).

Section C: List of publications after joining NIT-ANP, based on the work that is initiated after joining NIT-ANP with students from NIT-ANP as co-authors.

1.    Athira P., Ajay Tiwari, M. -J. Hsieh, J. -Y. Lin, Nidhi Puri, C. -W. Wang, C. H. Prashanth, C. Dhanasekhar, C. L.Huang,H.D.Yang,KrishnamurthyJyothinagaram,andD.ChandrasekharKakarla,Hiddenmagnetism,nonlinearmagnetodielectric coupling, and large multicaloric effect in multiferroic L-type Fe2(MoO4)3, Physical Review Applied ,Vol. 21,No.054025 (2024) (SCI,Q1, Impact factor 3.8).
2.   Abhijit Nayak, CH Prashanth, Debasmita Bala, Indukuru Ramesh Reddy, Kartick Tarafder, Venimadhav Adyam, Krishnamurthy Jyothinagaram, Low field-cooled induced large exchange bias effect and DFT calculations in ferromagnetic Sm2CoMnO6, Solid state communications, Vol. 378, No.115408 (2024) (SCI, Q2, Impact factor2.1).
3.   CH Prashanth, D Chandrasekhar Kakarla, Ajay Tiwari, Aprajita Joshi, Surajit Saha, HD Yang, Krishnamurthy Jyothinagaram, Spin-phonon coupling driven magnetodielectric effect in low-dimensional complex magneticBaGdFeO4system,PhysicaE:Low-dimensionalSystemsandNanostructures,Vol.158,No.115882(2024)(SCI,Q2,Impact factor 2.9).
4.   HPrashanth,TWYen,AjayTiwari,PAthira,SMHuang,BommareddyPoojitha,DPGulo,HLLiu,CWWang,YKLin, YC Chuang, YC Lai, Krishnamurthy Jyothinagaram, HD Yang, D Chandrasekhar Kakarla, Interplay of magnetic and electric coupling across the spin density wave to conical magnetic ordering in a BaHoFeO4 spin-clusterchaincompound,JournalofAlloysandCompounds,Vol.942,No.169017(2023)(SCI,Q1,Impactfactor6.3)
5.   C H Prashanth, Indukuru Ramesh Reddy, Kartick Tarafder, D Chandrasekhar Kakarla, H D Yang, Venimadhav Adyam, KrishnamurthyJyothinagaram,“Magneticcomplexity,magnetodielectric effect and DFT calculations on correlation driven Gd2CoMnO6 insulator”, Journal of Magnetism and Magnetic Materials, Vol. 563, No.169880 (2022) (SCI,Q2,Impact factor2.5)

Books/Chapter

Book on “Multiferroicity, Phase separation and Magnetic Field Driven Phenomena” published by LAMBERT Academic Publishing Group, 2016.

MEMBERSHIP IN PROFESSIONAL BODIES

 Life member of Magnetic Society of India (MSI). 

Administrative Activities at NIT-ANP.

 A.     Institute level duties:

• Chemistry-CycleCo-Ordinatorfor1^st Year B. Tech Students      (From August 2018-2020)
• Mess Warden for Boys Hostels                                                                      (2019-2020)
• Chief Warden, Hostels                                                                                        (2020-tillpresent

B.     Department level duties:

•   Member in DAC and DAAC for UG  (2018-2020)
•   Member in DAC and DAAC for PG&R (2019-2020)
•   PhysicsLab-1(Electrical-circuit lab) in-chargesince2018
•   Faculty In-charge for the Research & Development activities(2021-tillpresent)

Out reach activities

• One-monthshort-termscientificresearchvisitatProf.HDYang’sresearchlab,Dept.ofPhysics,NationalSun-YetSenUniversity,Kaohsiung,Taiwanaspartof India-Taiwan research collaboration project.
• Implementationofinternationalcooperationandex-situresearchprocesses
• Officialinteractionwiththeotherfacultymemberstohaveacademicandresearchcollaboration.
• InteractwithscholarsandstudentsofNSYSUniversity,Kaohsiung,Taiwan
• Delivered a lecture about the outcomes of project work and discussed with future objectives.
• PersonalinteractionwithProf.HDYangaboutthecurrentmanuscriptaswellasfutureacademicandresearch plans.

REFEREES

 1. Prof. Venimadhav Adyam

     M.Sc. Ph.D.

    Professor,  Cryogenic Engineering Centre,

    Indian Institute of Technology-Kharagpur,

    Kharagpur-721302, India

    Tel: 09775021822

     E-mail: venimadhav@hijli.iitkgp.ernet.in

2. Prof. P. S. Anil Kumar,

     M.Sc., Ph. D.

     Professor, Department of Physical Sciences,

   Indian Institute of Science, Bengaluru- 560012, India

   E-mail: psanilk@gmail.com , anil@physics.iisc.ernet.in

   Phone No: +91-9483005891

3. Prof. S V Bhatt

    Professor & INSA Senior Scientist    

    Department of Physics,

    Indian Institute of Science- Bengaluru-560012, India

    Tel: 080- 2293 2727

    E-mail: svbhat@physics.iisc.ernet.in

I hereby declare that the information furnished above is true to the best of my knowledge.

Date: 02-08-2024                                                                                                                               

(J KRISHNAMURTHY)

Place: NIT-Andhra Pradesh, India.