Michael DeMarco


Science Building, Room 262




  Mahattan College
M. A.   Queens College of CUNY

Ph. D.
  University of Cincinnati

Research Interests

  My area of research is condensed matter physics studied by using the Mossbauer effect


 “Absence of the hyperfine magnetic field at the Ru site in ferromagnetic rare-earth intermetallics”,

D. Coffey, M. DeMarco, P.C. Ho, M. B. Maple, T. Sayles, J. W. Lynn, Q. Huang, S. Toorongian and M. Haka, Phys. Rev. B 81, 184404 (2010).


"Surface induced suppression of magnetization in nanoparticles ",
C. Westman, S. Jang, C. Kim, S.
He, G. Harmon, N. Miller, B. Graves, N. Poudyal, R. Sabirianov, H. Zeng, M. DeMarco, and J. P. Liu,  J. Phys. D: Appl. Phys.41, 225003 (2008).

" Investigation of the Mossbauer spectrum of RuSr2GdCu2O8 as a function of Temperature ",
D. Coffey, M. DeMarco, B. Dabrowski, S. Kolesnik, S. Toorongian and M. Haka,  Phys. Rev. 77, 174513 (2008).

"Orbital ordering transition in La4Ru2O10 probed with Mossbauer spectroscopy ",
R. Heary, D. Coffey, M.DeMarco, P. Khalifah, S. Tooringian and M. Haka,   Physica B 393, 78 ( 2007).

"99Ru Mossbauer effect study of off-stoichiometric SrRu1-nO3 synthesized with different Curie temperatures",
M. DeMarco, D. Coffey, R. Heary, B. Dabrowski, P. Klamut, M. Maxwell, S. Toorongian and M. Haka,   Phys. Rev. 71, 104403 (2005).

"99Ru Mossbauer effect measurements in superconducting and magnetic RuSr2GdCu2O8",  
M. DeMarco, D. Coffey, J. Tallon, M. Haka, S. Toorongian and J. Fridmann, Phys. Rev. 65, 212506 (2002).

"Temperature dependence of the hyperfine magnetic field in SrRuO3 measured by the 99Ru Mossbauer Effect",
 M. DeMarco, G. Cao, J. E. Crow, D. Coffey, S. Toorongian, M. Haka and J. Friedmann,  Phys. Rev B 62, 14297 (2000).

"Observation of a magnetic phase transition in superconducting Sr2YRu0.95Cu0.05O6 by the 99Ru Mossbauer effect ",  
  M. DeMarco, H.A. Blackstead, John D. Dow, M.K.Wu, D.Y. Chen, F.Z. Chen, M.Haka, S.Toorongian, and J. Fridmann, Phys. Rev B 62, 14301 (2000).

"Magnetism and superconductivity in the Sr2YRu1-uCuuO6 and magnetism in Ba2GdRu1-uCuuO6 ",  
 H.A. Blackstead, John D. Dow, D.R.Harshman, M.J.DeMarco, M.K.Wu, M.Haka, and S.Toorongian, Eur. Phys. J. B15, 649-656 (2000).

" Transitions in Sr2RuO4 Compounds studied by the 99Ru Mossbauer effect ",  
  M. DeMarco, D.Graf, J.T.Rijssenbeek, R.J.Cava, D.Z.Wang, Z.R.Wang, Y.Tu, J.H.Wang, , M.Haka, S.Toorongian, M.J.Leone, and M.J.Naughton, Phys. Rev. B 60, 7570-7574 (1999).




Other papers of Interest:

" 99Ru Mossbauer effect study of Ruthenium Nitrosyls",
  M. Scott Goodman, M. De Marco, M. Haka, S. Toorongian and J. Fridmann,
Chem. Soc., Dalton Trans., 2002, 117-120 (2002).

"Mossbauer and Magnetization Studies of Nickel Ferrites",
  M. De Marco, X.W.Wang, R.L.Snyder, S.Bayya, M.White, M.J.Naughton, J.Simmons, J.Appl.
Phys., 73, 6287(1993).

"Oxygen Removal by Hydrogen Gas in 57Fe Doped YBa2Cu3Ox",
  M. De Marco, Min Qui, Jui H.Wang, M.Chaparla, and M.J.Naughton, Sol. St. Comm. 78, 385 (1991).

" Iron substitution in Y2Ba3Cu2O6 and YBa2Cu3O7-x ",  
  M. De Marco, G.Trbovich, , X.W. Wang, J. Hao, M.J. Naughton, and M. White, J. Appl. Phys. 69, 4886 (1991).

" Hyperfine Magnetic Field measurement in the Heusler Alloy Ni2MnGa ",  
  S.Jha, H.M. Seyoum, M. DeMarco,G.M. Julian, G.K. Shenoy and R.A. Dunlap, Phys. Rev. B 32, 6104 (1985).