2009

Structural, magnetic and magneto-transport studies in bulk Ni55.2Mn18.1Ga26.7 alloy.
I. Babita, R. Gopalan, V., Chandrasekaran, and S. Ram, J. Appl. Phys.105, (2009) 0239036.

Magnetic Phase transformation and magnetocaloric studies in ferromagnetic Ni55Mn20Ga25 Heusler alloys
I. Babita, R. Gopalan, and S.Ram, J. Phys : Conf. series 144, (2009),. 012066

Dynamic inversemagnetocaloric and martensite transition in Ni49Mn38Sn13 nanocrystals in low magnetic fields.
I. Babita, R. Gopalan, S. Ram, S. and V. Chandrasekaran, Phill. Mag. Letter 89, (2009) 399

Direct evidence for Cu concentration variation and its correlation to coercivity in Sm(Co0.74Fe0.1Cu0.12Zr.04)7.4 ribbons
R. Gopalan, K. Hono, A. Yan and O. Gutfleisch, Scripta Mater. 60 (2009)764

Room temperature multiferroism and magnetoelectric coupling in BaTiO3_BaFe12O19 system
A. Srinivas, R. Gopalan, V. Chandrasekharan, Solid State Comm. 149 (2009) 367

Study on morphology and magnetic behavior of SmCo5 and SmCo5/Fe nanoparticles synthesized by surfactant-assisted ball milling
P. Saravanan, M. Premkumar, , AK Singh, R Gopalan and V Chandrasekaran, J. Alloys and Compd. 480 (2009) 645

Effect of sintering temperature on the structure and magnetic properties of SmCo5/Fe nanocomposite magnets prepared by spark plasma sintering
P. Saravanan, R Gopalan, D. Sivaprakasham and V Chandrasekaran, Intermetallics, 17 (2009) 517

Consolidation of hydrogenation?disproportionation-desorption?recombination processed Nd-Fe-B magnets by spark plasma sintering
K. Suresh, T. Ohkubo, Y. K. Takahashi, K. Oh-ishi, R. Gopalan, K. Hono, T. Nishiuchi, N. Nozawa, and S. Hirosawa, J. Magn. Magn. Mater.(in press)

High saturation magnetization and microstructure in melt-spun Fe-P ribbons
R Gopalan, Y.M. Chen, T.Ohkubo and K. Hono, Scripta Mater 61 (2009) 544

Phase coexistence, microstructure and magnetism in Ni-Mn-Sb alloys
NV Rama Rao, R Gopalan, V Chandrasekaran and KG Suresh, J. Phys. D: Appl Phys. 42 (2009) 065002.

Coupled manetostructural transformations in melt-spun Ni55Mn19.6Ga25.4 ribbon: An electron spin resonance study
N V Rama Rao, R Gopalan, J Arout Chelvane, V Chandrasekaran, and K G Suresh, J. Appl. Phys. 105 (2009) 123904.

Textured resin bonded Sm(Co,Fe,Cu)5 nanostructured magnets exploiting magnetic field and surfactant assisted milling.
P, Saravanan, R Gopalan, R Priya, P. Ghosal and V Chandrasekaran, J. Alloys and Compd 477 (2009) 322

Effect of Fe-substitution on microstructure, hysteresis behaviour and magnetocaloric effect in Gd5Si2Ge2 Alloys
DM Rajkumar, M Manivel Raja, R Gopalan, A Sambasiva Rao and V Chandrasekaran J.Magn. Magn. Mater. 321 (2009) 1300

Anisotropic Nd-Fe-B nanocrystalline magnets processed by spark plasma sintering and in-situ hot pressing of hydrogenation?decomposition?desorption?recombination powder
R Gopalan, H. Sepehri-Amin, K. Suresh, T.Ohkubo, K.Hono, T. Nishiuchi, N. Nozawa and S. Hirosawa, Scripta Mater. (under review)

2008

Structural and Mossbauer studies on mechanical milled SmCo5/?-Fe nanocomposite magnetic powders
P. Saravanan, M. Manivel Raja, R. Gopalan, N.V. Rama Rao and V.Chandrasekaran Intermetallics 16 (2008) 636

Amorphization, nanocrystallization and magnetic properties of mechanically milled Sm-Co magnetic powders
R. Gopalan, K. Suresh, D.V. Sridhara Rao, A. K. Singh, N.V. Rama Rao, G. Bhikshamaiah, V. Chandrasekaran, Int. J. Mat. Res. 99 (2008) 773

Microstructure, magnetic and Mossbauer studies on spark plasma sintered SmCo5/Fe nanocomposite magnets
N.V. Rama Rao, P. Saravanan, R Gopalan, R., M. Manivel Raja, D.V. Sreedhara Rao, V. Chandrasekaran, D. Sivaprahasam and R. Ranganathan, J.Phys D: Appl. Phys. 41 (2008) 065001

Phase relationship, microtructure and magnetocaloric effect in Gd1-x(Si0.5Ge0.5)x alloys
M. Manivel Raja, R. Gopalan, D.M. Rajkumar, R. Balamuralikrishnan,and V. Chandrasekaran, KG Suresh and K.Hono, J.Phys D: Appl. Phsy 41 (2008) 055008

Magnetocaloric effect in high energy ball milled Gd5Si2Ge2 and Gd5Si2Ge2/Fe nano powders
D.M.Rajkumar, M. Manivel Raja, R. Gopalan and V. Chandrasekaran, J. Magn.and Magn. Materials 320 (2008) 1479

Martensite transformation and magnetic property dependence on the annealing temperature in Ni-rich Ni-Mn-Ga alloy
R. K. Singh and R. Gopalan, Advanced Mater. Res. 52 (2008) 57

Magneto-structural transformation, microstructure and Magnetocaloric effect in Ni-Mn-Ga Heusler alloys
I Babita, R Gopalan, M. Manivel Raja,V chandrasekaran, and S Ram, J. Appl. Phys. 102 (2007) 013906

Magnetic and structural transformation in off-stoichiometric NiMnGa alloys
R K Singh, M Shamsudin, R. Gopalan, R. P. Mathur and V. Chandrasekaran, Mat. Sci. &Engg. A 476 (2008)195

Microstructure and Magnetocaloric Effect in Gd5Si2Ge2-xGax Alloys
D.M. Raj Kumar, M. Manivel Raja, R. Gopalan, R. Balamuralikrishnan, A.K. Singh and V. Chandrasekaran ,J. Alloys & Compd 461, (2008) 14-20

Synthesis and characterization of nanomaterials
P. Saravanan, R.Gopalan and V.Chandrasekaran, Def. Sci. J. (India) 58 (2008) 504

Phase formation and microstructural investigation in Fe substituted SmCo5 melt- spun ribbons.
K. Suresh, R. Gopalan, G. Bhikshamaiah, AK Singh, DV Sridhara Rao, K. Muraleedharan, and V. Chandrasekaran , J. Alloys and Compd (accepted)

Spark Plasma sintered Sm2Co17-FeCo nanocomposiite permanent magnets synthesized by high energy ball milling
G. Sreenivasulu, R Gopalan, V. Chandrasekaran, G. Markandeylu, KG Suresh and BS Murty, Nanotechnology, 19 (2008) 335701

Thermal, Structural and magnetic characterization of Ni-Mn-Ga sheets fabricated by powder in tube roll bonding technique
R.K. Singh and R Gopalan, Mater.Sc. Engg.B, doi:10.1016/j.mseb.2008.07.001

Mossbauer studies on structural ordering and magnetic properties of melt-spun Ni-Fe-Ga ribbons
N. V. Rama Rao, R. Gopalan, M. Manivel Raja, V. Chandrasekaran1 and K. G. Suresh, Appl. Phys. Lett 93 (2008) 202503

Studies on ordering temperature and martensite stabilization in Ni55Mn20?xGa25+x alloys,
I. Babita, R. Gopalan, M, Rajasekhar, M. and S. Ram, J. of Alloys and Compd, (2008) (available online doi:10.1016/j.jallcom.2008.08.004 )

Inverse magnetocaloric effect in ferromagnetic Ni-Mn-Sn Heusler alloys,
I. Babita, R. Gopalan, V. Chandrasekaran, V. and S. Ram, (2008), (Accepted, Indian Journal of Pure and Applied Physics).

2007

Structural, magnetic and magneto-transport Studies in melt-spun Ni-Mn-Ga Ribbons,
N.V.R Rao,. B. Ingale, R. Gopalan, V. Chandrasekaran, N.K, Chaubey, A. Poddar, and R. Ranganathan, SINP, Kolkata, 11-16th December 2007, A. Ghoshray, and B. Bandyopadhyay,., American Institute of Physics, CP1003, pp. 201-203.

Coercivity of melt-spun Sm(Co0.9Cu0.1)4.8 ribbons
K Suresh, R Gopalan, AK Singh,G. Bhikshamaiah, V Chandrasekaran and K Hono, J. Alloys and Compounds,436 (2007) 358

Structural and magnetic studies on spark plasma sintered SmCo5/Fe nanocomposite magnets
NV Ramarao, R Gopalan, M Manivelraja, V Chandrasekaran, D Chakravorty, R Sundresan and K Hono, J. Magn. Magn. Materials, 312 (2007) 252

Coercivity enhancement in melt-spun SmCo5 by Sn addition
AA Kundig, R Gopalan, T. Ohkubo and K Hono, Scripta Mater., 54 (2006) 2047

Phase transformation and magnetic properties in Ni-Mn-Ga Heusler alloys
I. Babita, M. Manivel raja, R Gopalan, V Chandrasekaran and S Ram, J. Alloys and Compounds, 432 (2007) 23

Magneto-structural transformation in melt-spun Ni-Mn-Ga ribbons
NV Rama Rao, R Gopalan, M Manivel Raja, B Majumdar and V Chandrasekaran Scripta Mater. 56 (2007) 405

SmCo5/Fe nanocomposite magnetic powders processed by surfactant and magnetic field-assisted ball milling
P. Saravanan, R. Gopalan, N.V. Rama Rao, M. Manivel Raja and V. Chandrasekaran, J.Phys D: Applied Phys 40(2007)5021

Structural, Magnetic and Magneto-transport Studies in Melt-spun Ni-Mn-Ga Ribbons,
N.V. Rama Rao, Babita Ingale, R. Gopalan , V. Chandrasekaran, Niraj K Chaubey, A.Poddar , R. Ranganathan andK.G. Suresh, AIP Proceedings on ICMM 2007

Magnetocaloric Studies in Gd5Si2Ge2-xFex Alloys, D.M. Rajkumar,
M. Manivel Raja, R. Gopalan and V. Chandrasekaran, AIP Proceedings on ICMM 2007

2006

Science and technology of permanent magnets
R Gopalan, Defence Science Spectrum (India) 2006, p.179

Identification of the cell boundary phase in the isothermally aged commercial Sm(Co0.725Fe0.1Cu0.12Zr0.04)7.4 sintered magnet
R Gopalan, T Ohkubo and K Hono, Scripta Mater., 54 (2006) 863 1345

Huge coercivity of SmCox and Sm(CoCu)5 films prepared by magnetron sputtering
J. Zhang, YK Takahashi, R Gopalan and K. Hono, J. Magn. Magn.310 (2006) 1

Magnetic properties of mechanically millede SmCo permanent magnet materials with the TbCu7 structure
RJ. Justin, A Naraynasamy, R Gopalan, V Chandrasekaran, B Jeyadevan and K Tohiji, Materials Trans. of JIM, 47(2006) 2264

2005

X-ray diffraction characterization of mechanically milled SmCoFe nano magnetic powders by Rietveld Refinement
K Suresh, AK Singh, R Gopalan and V Chandrasekaran, Proceedings of Advanced X-ray techniques in research and industry, (ed). AK Singh, IOS Press, Amsterdam, The Netherlands, (2005) 503-510

Investigation on structure-magnetic property correlation in melt-spun Sm(Co0.56Fe0.31Cu0.04Zr0.05B0.04)z ribbons
R. Gopalan, D. H. Ping, K. Hono, M. Q. Huang, B. R. Smith, Z. Chen and B. M. Ma, J. Magn. Magn. Mater. 292 (2005) 150

Nanoscale microstructure and its effect on coercivity in melt-spun Sm(Co0.74Fe0.1Cu0.12Zr0.04B0.015)7.4 ribbons.
R. Gopalan, X. Xiong, T. Ohkubo and K. Hono, J. Magn. Magn. Mater. 295 (2005) 7

Mechanically milled and spark plasma sintered FePt-based bulk magnets with high coercivity
R. Gopalan, A.A. Kundig, M. Ohnuma, S. Kishimoto and K. Hono, Scripta Materialia, 52 (2005) 761

Sm(Co,Cu)5/Fe exchange spring multilayer films with high energy product
J. Zhang, Y. K. Takahashi, R. Gopalan, and K. Hono, Appl. Phys. Lett. 86 (2005) 122509

Platelet microstructure and magnetic properties in rapidly solidified Sm20.8Co63.4Cu2.4Zr1.6B4 ribbons
R Gopalan, T Ohkubo and K Hono, Scripta Mater, 53 (2005) 367

Fabrication of Bulk nanocrystalline Fe-C alloy by spark plasma sintering of mechanically milled powder
HW Zhang, R Gopalan, T Mukai and K Hono, Scripta Mater, 53 (2005) 863

2004

Microstructure and its correlation to magnetic properties in 2:17 type (Sm,Gd)-Co-Fe- Cu-Zr alloys
AC Abhyankar, R Gopalan, AK Singh, K Muraleedharan, Vydehi A Joshi, TSRK Sastry and V Chandrasekaran J. Mater Sci., 39 (2004) 3433

Microstructural evolution and its dependence on magnetic properties in melt-spun Sm-Co-Cu-B and Sm-Co-Fe-Cu-B ribbons
R. Gopalan, D. H. Ping and K. Hono, J. Magn. Magn. Mater. 284 (2004) 321

Microstructure and magnetic properties of melt-spun Sm(Co0.58Fe0.31Cu0.04Zr0.05B0.02)z ribbons
R. Gopalan, D. H. Ping, K. Hono, M. Q. Huang, B. R. Smith, Z. Chen and B. M. Ma, J. Appl. Phys. 95 (2004) 4962

Prior to 2004