Department of Physics

Indian Institute Of Technology Madras , Chennai
Dr. Markandeyulu, G
HSB 106B
DESIGNATION

Professor

Ph.D.

IIT Madras

CURRENT RESEARCH INTEREST

Magnetism and magnetic materials

CONTACT

044 - 2257 4870

mark@iitm.ac.in

RESEARCH GROUPS

Magnetism and Magnetic Materials


 Current Research :



 Recent Publications :

Microstructure and magnetostriction of Tb0.3Dy0.7Fe1.95 prepared under different solidification conditions by zoning and modified Bridgman techniques

Mithun Palit, S. Pandian, R. Balamuralikrishnan, A. K. Singh, Niranjan Das, V.Chandrasekharan and G. Markandeyulu

Year: J. Appl. Phys. [Accepted]

Magnetic and Electrical properties of Ho0.85Tb0.15Mn2 and Ho0.85Tb0.15Fe2

J. Arout Chelvane, G. Markandeyulu, N. Harish Kumar, R. Nirmala and S. K. Malik

Physica B, 373, 107-110, (2006)

Year: 2006

Effect of Al and Si substitution on the magnetic properties of SmTbFe17

J. C. Ingersoll, G. Markandeyulu, V. S. Murty and K. V. S. Rama Rao

J. Appl. Phys. 98, 093902 – 6 (2005)

Year: 2005

Magnetoresistance studies of Ho0.85Tb0.15Mn2-xFex (x=0, 0.25, 0.5, 1, and 2)

J. Arout Chelvane, G. Markandeyulu, N. Harish Kumar, R. Nirmala and S. K. Malik

Phys. Rev. B 72, 092406/1-092406/4 (2005)

Year: 2005

Magnetic and electrical properties of Dy0.73Tb0.27Fe2-xMnx [x=0, 0.25, 0.5 and 1]

J. Arout Chelvane and G. Markandeyulu

J. Magn. Magn. Mater., 294, 298-304 (2005)

Year: 2005

Magnetic properties of YGdFe17-x(Ga,Al)x (x = 0 - 8)

R. Srilatha, V. S. Murty and G. Markandeyulu

J. Appl. Phys., 97, 10M503, (2005)

Year: 2005

Magnetic properties of SmTbFe17-xGax [0 <= x<= 8]

J. C. Ingersoll, G. Markandeyulu, V. S. Murty and K. V. S. Rama Rao

J. Appl. Phys., 97, 10H109 (2005)

Year: 2005

Structural and Magnetic Properties of (Sm,Pr)3(Fe1-xAlx)27.5Ti1.5 [x = 0.1, 0.2, 0.3]

S. Venkatesh, G. Markandeyulu and K. V. S. Rama Rao

J. Appl. Phys., 97, 10H105 (2005)

Year: 2005

Structural, electrical and magnetic properties of Ho0.85Tb0.15Fe2Bx

J. Arout Chelvane and G. Markandeyulu

J. Magn. Magn. Mater., 281, 1-5 (2004)

Year: 2004

Magnetic and electrical properties of Ho0.85Tb0.15Fe2-xMnx [0, 0.5, 1.0, 1.5]

J. Arout Chelvane, S. Kasiviswanathan, and G. Markandeyulu

J. Magn. Magn. Mater., 277, 175 – 180 (2004)

Year: 2004

Effect of Co, Dy and Ga on the magnetic properties and the microstructure of powder metallurgically processed Nd-Fe-B magnets.

S. Pandian, V. Chandrasekaran, G. Markandeyulu, K. J. L. Iyer and K. V. S. Rama Rao

J. Alloys and Compounds., 364, 295 – 303 (2004)

Year: 2004

Magnetic properties of ball-milled TbFe2 and TbFe2-B

J. Arout Chelvane, S. Kasiviswanathan, M. V. Rao and G. Markandeyulu

Bull. Mater. Sci., 27, 169 – 173 (2004)

Year: 2004

Structural and magnetic properties of ErPrFe17-xMx [M = Ga, Si; x = 0 – 3.5]

J. C. Ingersoll, G. Markandeyulu, V. S. Murthy and K. V. S. Rama Rao

J. Alloys and Compounds., 354 29-34 (2004)

Year: 2004

Structural and magnetic properties of (Sm1-xPrx)2Fe27.5Ti1.5 [x = 0.2, 0.5, 0.8, 1.0] and their nitrides

24. V. R. Shah, G. Markandeyulu, K. V. S. Rama Rao, M. Q. Huang, K. Sirisha and M. E. McHenry

J. Alloys and Compounds, 352 6-15 (2003)

Year: 2003

Effect of Al, Cu, Ga and Nb additions on the magnetic and microstructural features of sintered NdFeB

25. S. Pandian, V. Chandrasekharan, G. Markandeyulu, K. J. L. Iyer and K. V. S. Rama Rao

J. Appl. Phys., 92 6082 – 6096 (2002)

Year: 2002

Microstructure and magnetostriction of Tb0.3Dy0.7Fe1.95 prepared under different solidification conditions by zoning and modified Bridgman techniques

Mithun Palit, S. Pandian, R. Balamuralikrishnan, A. K. Singh, Niranjan Das, V.Chandrasekharan and G. Markandeyulu

J. Appl. Phys. [Accepted]

Effect of Mn on the Magnetic and Electrical properties of Ho0.85Tb0.15Fe2

J. Arout Chelvane, G. Markandeyulu, N. Harish Kumar, R. Nirmala and S. K. Malik

IEEE Trans. Mag. [Accepted]

Formation of metastable TbFe5 phase by mechanical alloying

S Narayana Jammalamadaka, G. Markandeyulu and Krishnan Balasubramaniam

IEEE Trans. Mag. [Accepted]

Structural and Magnetic Properties of Gd3(Fe1-xAlx)27.5Ti1.5 (x = 0.1 - 0.4)

Ravi, S. Venkatesh, G. Markandeyulu and K. Prasad Rao

IEEE Trans. Mag. [Accepted]

Effect of Co on the magnetic properties of YGdFe17-xCoxGa

R. Srilatha, Ravi, G. Markandeyulu and V. S. Murty

IEEE Trans. Mag. [Accepted]

Magnetic Properties of ( Sm0.4Pr0.6 )3 (Fe1-xCox )27.5Ti1.5 [x = 0.1, 0.2, 0.3, 0.4]

S. Venkatesh, Ravi and G. Markandeyulu

IEEE Trans. Mag. [Accepted]

Effect of Annealing on Magnetoimpedance of Co68Fe4Zr10Cu2B16 ribbons

V. Satya Narayana Murthy and G. Markandeyulu

J. Magn. Magn. Mater. [in press]

Magnetic properties of Y1-xGdxFe2By [x = 0, 0.25, 0.5, 0.75, 1; y = 0, 0.1, 0.15, 0.2]

J. Arout Chelvane and G. Markandeyulu

J. Alloys and Compounds [in press]

Effect of length and annealing conditions on magneto-impedance of Co68Fe5Si12B15

V. Satya Narayana Murthy, S. Venkatesh and G. Markandeyulu

J. Appl. Phys. [in press]

Effect of Al on the magnetic properties of Pr3(Fe1-xAlx)27.5Ti1.5 [x = 0.1, 0.2, 0.3]

S. Venkatesh, Ravi, G. Markandeyulu and K. V. S. Rama Rao

J. Appl. Phys. [in press]

Structural and magnetic properties of Nd3(Fe1-xAlx)27.5Ti1.5 (x = 0.1-0.4)

Ravi, S. Venkatesh, G. Markandeyulu and K. Prasad Rao

J. Appl. Phys. [in press]