Browsing Department of Physics by Title

Browsing Department of Physics by Title

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  • Thirukkanesh, S.; Ragel, F. C. (Astrophysics and Space Science, 2014)
    We formulate a system of field equations with Van der Waals type equation of state to the Einstein field equations in spherically symmetric static spacetime to describe anisotropic compact matter and obtain a new class of ...
  • Thirukkanesh, S.; Ragel, F. C.; Sharma Ranjan; Das Shyam (The European Physical Journal, 2018)
    We present an algorithm to generalize a plethora of well-known solutions to Einstein field equations describing spherically symmetric relativistic fluid spheres by relaxing the pressure isotropy condition on the system. ...
  • Thirukkanesh, S.; Ragel, F. C. (INDIAN ACAD SCIENCES and SPRINGER, 2014)
    We study static spherically symmetric space-time to describe relativistic compact objects with anisotropic matter distribution and derive two classes of exact models to the Einstein–Maxwell system with a modified Van der ...
  • Thirukkanesh, S.; Ragel, F. C. (CHINESE PHYSICAL SOC, PEOPLES R CHINA and IOP Publishing Ltd, 2016)
    We establish a systematic algorithmic approach that generates new classes of solutions to the Einstein-Maxwell system in static spherically symmetric spacetime from well known uncharged solutions. A particular case is shown ...
  • Ragel, F. C.; P de V du Plessis; A M Strydom (IOP PUBLISHING LTD, 2007)
    The antiferromagnetic Kondo compound CePtGa and the Ce(Pt1−xNix)Ga and CePt(Ga1−yAly) alloy systems have been studied by resistivity ρ(T), magnetoresistivity MR and susceptibility χ(T) measurements on polycrystalline samples ...
  • Thirukkanesh, S.; Ragel, F. C. (Pramana-Journal of Physics, 2013)
    Static spherically symmetric space-time is studied to describe dense compact star with quark matter within the framework of MIT Bag Model. The system of Einstein’s field equations for anisotropic matter is expressed as ...
  • Adroja, D. T.; Hillier, A. D.; Muro, Y.; Kajino, J.; Takabatake, T.; Peratheepan, P.; Strydom, A. M.; Deen, P. P.; Demmel, F.; Stewart, J. R.; Taylor, J. W.; Smith, R. I.; Ramos, S.; Adams, M.A. (Physical Review, 2013)
    We have carried out muon spin relaxation (muSR), neutron diffraction and inelastic neutron scattering (INS) investigations on polycrystalline samples of Ce(Ru1-xFex)2Al10 (x=0, 0.3, 0.5, 0.8 and 1) to investigate the nature ...
  • Ragel, F. C.; P de V du Plessis; A M Strydom (Solid State Communications, 2007)
    The occurrence of a maximum at a temperature T-max in the resistivity of the dense Kondo compound CeNiAl4 and in (Ce1-x,Y-x)NiAl4 alloys is investigated. Tmax (proportional to T-K, the Kondo temperature) first increases, ...
  • Khuntia, P.; Peratheepan, P.; Strydom, A. M.; Utsumi, Y.; Tsuei, K. D.; Tjeng, L. H.; Steglich, F.; Baenitz, M. (Physical Review, 2014)
    We present magnetization, specific heat, and 27 Al NMR investigations on YbFe 2 Al 10 over a wide range in temperature and magnetic field. The magnetic susceptibility at low temperatures is strongly enhanced ...
  • Adroja, D. T.; Hillier, A. D.; Ritter, C; Bhattacharyya, A.; Khalyavin, D. D.; Strydom, A. M.; Peratheepan, P.; Fak, B.; Koza, M. M.; Kawabata, J.; Yamada, Y.; Okada, Y.; Muro, Y.; Takabatake, T.; Taylor, J. W. (PHYSICAL REVIEW, 2015)
    The opening of a spin gap in the orthorhombic compounds Ce T 2 Al 10 ( T = Ru and Os ) is followed by antiferromagnetic ordering at T N = 27 and 28.5 K, respectively, with a small ordered moment ...
  • Ragel, F. C.; P de V du Plessis; A M Strydom (Journal of Physics, 2009)
    Measurements of electrical resistivity (ρ(T)), magnetoresistivity (MR), magnetic susceptibility (χ(T)) and heat capacity (CP(T)) are presented for the (Ce1−xLax)PtIn alloy system of which the CePtIn parent is a known dense ...
  • Ragel, F. C.; P de V du Plessis; A M Strydom (IOP PUBLISHING LTD, 2008)
    Electrical resistivity (ρ(T)) and magnetoresistivity (MR) measurements are presented for the (Ce1−xLax)Pt2Si2 alloy system. ρ(T) data at low temperatures for alloys in the concentrated Kondo lattice regime 0≤x≤0.2 conform ...
  • Ragel, F. C.; P de V du Plessis; A M Strydom (ELSEVIER SCIENCE BV, 2007)
    Electrical resistivity results of Ce(Pt1-xNi)Ga and CePt(Ga1-yAl) alloys show features at low temperature indicating antiferromagnetic ordering and Kondo behaviour. The variation of Néel temperature with alloy composition ...
  • Strydom, A. M.; Peratheepan, P.; Sarkar, R.; Baenitz, M.; Steglich, F. (Journal of the Physical Society of Japan, 2011)
    We report on physical properties of the two new iron aluminides YFe2Al10 and YbFe2Al10. They are members of a broader rare-earth based family of intermetallics in which unusual properties have been the subject of considerable ...
  • Peratheepan, P.; Strydom, A. M. (Journal of Physics, 2015)
    We report the results of a comprehensive physical and magnetic property study of the new isotypic aluminides SmT2Al10 (T = Fe, Ru). These two compounds are members of a rare-earth based system which has become an exemplary ...
  • Carleschi, E.; Doyle, B. P.; Snyman, J. L.; Magnano, E.; Nappini, S; Pis, I.; Bondino, F.; Peratheepan, P.; Strydom, A. M. (Physical Review, 2015)
    We have investigated the contribution of Ce 4 f states to the electronic structure of the intermetallic ferromagnet CePdIn 2 by means of x-ray absorption spectroscopy and resonant and nonresonant photoemission ...
  • Thirukkanesh, S.; Ragel, F. C. (Pramana-Journal of Physics, 2012)
    We study static spherically symmetric spacetime to describe compact objects with anisotropic matter distribution. We express the system of Einstein field equations as a new system of differential equations using a coordinate ...
  • Strydom, A. M.; Khuntia, P.; Baenitz, M.; Peratheepan, P.; Steglich, F. (Physica Status, 2013)
    YFe2Al10 forms in a well-ordered crystal structure, with a unique site for the magnetic atom Fe. At elevated temperatures YFe2Al10 behaves electronically as a good metal. At low temperatures on the other hand, signatures ...
  • Thirukkanesh, S.; Ragel, F. C. (International Journal of Theoretical Physics, 2014)
    We study the Einstein system of equations in static spherically symmetric spacetimes. We obtained classes of exact solutions to the Einstein system by transforming the condition for pressure isotropy to a hypergeometric ...
  • Ragel, F. C.; P de V du Plessis; A M Strydom (Journal of Physics and Chemistry of Solids, 2010)
    The solid solution (Ce1−xLax)PtGa has been studied through X-ray diffraction, magnetization (σ(B)), magnetic susceptibility (χ(T)), electrical resistivity (ρ(T)), magnetoresistivity (MR) and heat capacity (CP(T)) measurements. ...

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