Functional Materials Lab Functional Materials Laboratory

  
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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. Raed 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