Hari Srikanth
Research
Magnetocaloric Effect in Complex Oxides
Magnetic oxides exhibit rich complexity in their fundamental physical properties determined by the intricate interplay between structural, electronic and magnetic degrees of freedom. The common theme that is often present in many systems is the strong magnetostructural coupling and possible spin frustration induced by lattice geometry. Read More
Transverse Suseptibility
We measure transverse susceptibility (TS) in our lab using a a resonant radio frequency technique based on a tunnel diode oscillator (TDO). This method has been validated by us over the years to be an excellent probe of the dynamic magnetic response and, in particular, the anisotropy. Read More
Giant Magnetoimpedance (GMI)
When a static magnetic field Hdc is applied to a magnetic conductor, a change in the total impedance of the material is observed. This leads to Magnetoimpedance (MI) phenomena. Read More
Competing effect of blocking and spin frustration in nanostructured gadolinium iron
garnets
The ground state magnetic properties and relaxation mechanism in magnetically frustrated system of Gd3Fe5O12 is of topical interest due to its complex magnetic structure. As a consequence of geometric and magnetic frustrations, the Gd3Fe5O12 system is expected to show glassy magnetic behavior. Read More
Functional nanocomposite polymer films with uniform magnetic nanoparticle dispersions
Magnetic nanoparticles embedded in polymer matrices are good examples of functional nanostructures with excellent potential in applications such as tunable microwave devices, EMI shielding, and flexible electronics. The challenge comes with evenly dispersing the nanoparticles once they are embedded in the polymer matrix. Read More
Origin of Magnetic Anomalies and Relaxation Mechanisms in Ferrofluids
From a fundamental physics perspective, it is proposed that blocking of magnetic nanoparticles
and freezing of a carrier fluid would affect the magnetization and relaxation processes
in ferrofluids. Read More