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Invited researcher to the CEMES, Murtaza Bohra from Mahindra University, Hyderabad, INDIA will present on Wednesday, August 24 at 2:00 p.m. in the CEMES Hortensias room the following seminar :

Role of nanostructured Zn-ferrite for Spin Insulatronics


Abstract :

Creating exotic oxide-based spintronic devices demands exploration of new spinel having a complex crystal structure with many degrees of freedom that can be engineered to produce multifunctional properties at nano-scale. The controlled growth of nanometric spinel oxide films allows the stabilization of novel magnetic phases with properties dramatically different from bulk ones [1]. A very interesting feature of Zn-ferrite (ZnFe2O4) is that it shows paramagnetic behavior in bulk at room temperature whereas strong magnetic ordering has been observed at nanoscale, providing a platform for various spintronic research. This would allow us to build monolithic spin-filter junctions, exchange bias structure and magnetic tunnelling junctions  based on a single material homojunctions and recently developed novel spin pumping devices [2] using its tunable magnetic and electric transport properties while preserving crystal symmetry.


  1. Large room temperature magnetization in nanocrystalline zinc ferrite thin films, Bohra et al. Applied Physics Letters 88 (26), 2506 (2006).
  2. Spin current and spin waves at a platinum/yttrium iron garnet interface: impact of microwave power and temperature,  Ovsyannikov et al. J. Phys. D: Appl. Phys. 54, 365002 (2021).

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