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We report electrical resistivity of Ce2.1Nd0.9Al compound under applied magnetic fields. Magnetic field effect on the structural transition and Kondo ordering is studied. 30% Nd doping in Ce3Al makes TS = TK∼25K. Resistivity fits at low temperatures at different magnetic fields reveal a clear competition between Kondo and e-e interactions. It is demonstrated that Kondo interactions are weakened by the applied magnetic field and thus enhancing the e-e interaction. There seems a characteristic field where both the interactions contribute equally and for this sample it is around 6T.

We study, experimentally, the zero field temperature dependence of electrical resistance and Seebeck coefficient in B20 cubic type structure Fe0.8Co0.2Si. Ferromagnetic and metal like to semiconductor like transition temperatures are determined to be 32K and 70K, respectively and electron type charge carriers contributed to the Seebeck coefficient largely and resulted in negative sign. The gradual upturn in thermopower at low temperatures is attributed to change in electronic structure due course of magnetic transition from spin unpolarized to polarized state.

Here, we explore magneto-transport properties on 3d transition monosilicide MnSi. Zero field resistance as a function of temperature for MnSi shows a drop at the onset of magnetic ordering. A strong negative magnetoresistance can be explained as the suppression of spin fluctuations and magnetic field tuning of scattering strength of conduction electrons. MnSi is useful for technological application as it shows an appreciable percentage of magnetoresistance value of 12 to 20 even at moderate fields of 2-5T, respectively.

We report here induction of superconductivity by doping Copper (Cu) in the well known CDW conductor, TiSe2. Resistivity of parent TiSe2 and Cu0.08TiSe2 were measured down to 1.8K and fields upto 14T. The CDW transition in the parent compound TiSe2 is around 150K, as signaled by a huge but broad hump in the resistivity. Upon introduction of Cu in the TiSe2 matrix, superconductivity is observed. The zero field Tc is 2.92K, is quite interesting and comparable to that of literature. Various superconducting parameters are estimated and discussed.

Here, we report heat capacity and magnetocaloric effect (MCE) on R5T4 ternany compound Dy5Ge3Si. Heat capacity depicts a peak at 48.4 K which is associated with antiferromagnetic ordering. It gets suppressed and shifts towards low temperatures with field. The estimated critical field is 5 T for antiferro to ferromagnetic transition. Heat capacity plays a significant role in determining MCE, where from isothermal entropy change and adiabatic temperature change can be derived. From MCE point of view, sample shows maximum ΔS of 6.6 mJ/g‐K at 56.5 K and relative cooling power (RCP) of 356.4 J/kg for temperature range from 46–100 K and hence can be used for magnetic cooling technological applications.

Anomalously large RCP (Relative Cooling Power) and a reasonable high adiabatic change ‘ΔT’ has been observed in magnetocaloric composite sample Dy5Si4 : Dy5Si3 for a nominal ratio of 2:1. Observed magnetic ordering temperatures for such a composite is 136 K and 39 K respectively which can be assigned to its constituents. Even though the observed ‘ΔT’ is only 5 K for a field of 14 T, the combined RCP is very large, viz 1283 J/kg. Added merit is the width of temperature over which cooling can be done is 95 K. This makes the system more promising and may be a possible candidate for the Ericsson cycle over a temperature range from 140–35 K.

Skutterudites is known to have fascinating ground states depending upon the void filling. Heat capacity of partially filled Pr0.8Pt4Ge12 and doubly filled Pr0.8Nd0.2Pt4Ge12 skutterudites has been investigated. Superconducting gaps have been quantified through heat capacity in the presence of magnetic fields. C/T versus T2 plot of Pr0.8Nd0.2Pt4Ge12 shows an upturn at low temperatures and this tendency increases with magnetic field, suggesting the possibility of a field induced NFL like states due to magnetic correlations co‐existing with superconductivity.