Nanophysics and its applications.
Surface magnetism in core/shell, solid and hollow nanoparticles.
Complex Oxides and other correlated electron systems.
Lower dimensional magnetism (thin films and nanoparticles).
Ferroelectric and multiferroic systems.
Defect induced magnetism in Oxides.
 G.H. Jaffari, A. Samad, A.M. Iqbal, S. Hussain, A. Mumtaz, M.S. Awan, M. Siddique, S.I. Shah, Effect of A and B-site substitution with Pb, La and Ti on phase stabilization and multiferroic properties of BiFeO3, Journal of Alloys and Compounds 644(2015) 893-899.
 G.H. Jaffari, A.K. Rumaiz, C. Ni, E. Yassitepe, M. Bah, S.I. Shah, Observation of metastable phase separation and amorphous phase in Fe67Co33 alloy thin films synthesized by pulsed laser depositions, Current Applied Physics 15(2015) 717-721.
 G.H. Jaffari, M.A. Iqbal, S.K. Hasanain, A. Ali, A.S. Bhatti, S.I. Shah, A. Mumtaz, Effect of densification on the ferroelectric response of Ba0.4Sr0.6TiO3, Solid State Communications 205(2015) 46-50.
 S. Hussain, S.K. Hasanain, G.H. Jaffari, N.Z. Ali, M. Siddique, S.I. Shah, Correlation between structure, oxygen content and the multiferroic properties of Sr doped BiFeO3, Journal of Alloys and Compounds 622(2015) 8-16.
 G.H. Jaffari, Z. Mehmood, A.M. Iqbal, S.K. Hasanain, S.I. Shah, Development of ferroelectric correlations in the quantum paraelectric and antiferrodistortive regimes in BaxSr1-xTiO3 (x <= 0.10), Journal of Applied Physics 116(2014).
 S.U. Awan, S.K. Hasanain, G.H. Jaffari, Z. Mehmood, Carrier concentration dependence of ferroelectric transition in multiferroic Li doped and Li-Co co-doped ZnO nanoparticles, Applied Physics Letters 104(2014).
 S.U. Awan, S.K. Hasanain, G.H. Jaffari, D.H. Anjum, U.S. Qurashi, Defects induced luminescence and tuning of bandgap energy narrowing in ZnO nanoparticles doped with Li ions, Journal of Applied Physics 116(2014).
 G.H. Jaffari, H. Lin, A.K. Rumaiz, E. Yassitepe, C. Ni, S.I. Shah, Comparative surface studies of oxygen passivated FeCo nanoparticles and thin films, Physica Status Solidi a-Applications and Materials Science 210(2013) 306-310.
 S. Hussain, S.K. Hasanain, G.H. Jaffari, S. Faridi, F. Rehman, T.A. Abbas, S.I. Shah, Size and Lone Pair Effects on the Multiferroic Properties of Bi(0.75)A(0.25)FeO(3-delta) (A = Sr, Pb, and Ba) Ceramics, Journal of the American Ceramic Society 96(2013) 3141-3148.
 S.U. Awan, S.K. Hasanain, M.F. Bertino, G.H. Jaffari, Effects of substitutional Li on the ferromagnetic response of Li co-doped ZnO:Co nanoparticles, Journal of Physics-Condensed Matter 25(2013).
 A.K. Rumaiz, J.C. Woicik, C. Weiland, Q. Xie, D.P. Siddons, G.H. Jaffari, C. Detavernier, Band alignment in Ge/GeOx/HfO2/TiO2 heterojunctions as measured by hard x-ray photoelectron spectroscopy, Applied Physics Letters 101(2012).
 G.H. Jaffari, T. Ekiert, K.M. Unruh, S.I. Shah, Effect of particle size distribution on the magnetic properties gamma-Fe2O3 nanoparticles, Materials Science and Engineering B-Advanced Functional Solid-State Materials 177(2012) 935-941.
 G.H. Jaffari, A. Ceylan, H.P. Bui, T.P. Beebe, Jr., S. Ozcan, S.I. Shah, Non-equilibrium cation distribution and enhanced spin disorder in hollow CoFe2O4 nanoparticles, Journal of Physics-Condensed Matter 24(2012).
 E. Yassitepe, Z. Khalifa, G.H. Jaffari, C.-S. Chou, S. Zulfiqar, M.I. Sarwar, S.I. Shah, A new route for the synthesis of CuIn0.5Ga0.5Se2 powder for solar cell applications, Powder Technology 201(2010) 27-31.
 A.K. Rumaiz, J.C. Woicik, W.G. Wang, J. Jordan-Sweet, G.H. Jaffari, C. Ni, J.Q. Xiao, C.L. Chien, Effects of annealing on the local structure of Fe and Co in CoFeB/MgO/CoFeB tunnel junctions: An extended x-ray-absorption fine structure study, Applied Physics Letters 96(2010).
 M. Coskun, M. Korkmaz, T. Firat, G.H. Jaffari, S.I. Shah, Synthesis of SiO2 coated NiFe2O4 nanoparticles and the effect of SiO2 shell thickness on the magnetic properties, Journal of Applied Physics 107(2010).
 A.K. Rumaiz, J.C. Woicik, E. Cockayne, H.Y. Lin, G.H. Jaffari, S.I. Shah, Oxygen vacancies in N doped anatase TiO2: Experiment and first-principles calculations, Applied Physics Letters 95(2009).
 G.H. Jaffari, H.-Y. Lin, C. Ni, S.I. Shah, Physiochemical phase transformations in Co/CoO nanoparticles prepared by inert gas Condensation, Materials Science and Engineering B-Advanced Functional Solid-State Materials 164(2009) 23-29.
 A. Aslam, S.K. Hasanain, G.H. Jaffari, M. Asim, S. Ali, P. Granitzer, H. Krenn, P. Knoll, W. Lang, Phase separation and stability in Sm(0.50)Sr(0.50)MnO(3): effects of cation dopants, Journal of Physics-Condensed Matter 20(2008).