Electric and Magnetic Tuning of Gilbert Damping Constant in LSMO/PMN-PT(011) Heterostructure.

Electric field control of magnetodynamics in magnetoelectric (ME) heterostructures has been the subject of recent interest due to its fundamental complexity and promising applications in room temperature devices. The present work focuses on the tuning of magnetodynamic parameters of epitaxially grown ferromagnetic (FM) LaSrMnO(LSMO) on a ferro(piezo)electric (FE) Pb(MgNb)O-PbTiO(PMN-PT) single crystal substrate. The uniaxial magnetic anisotropy of LSMO on PMN-PT confirms the ME coupling at the FM/FE heterointerface.

Correlation between size, shape and magnetic anisotropy of CoFeO ferrite nanoparticles.

The present work reports the effect of particle size and shape of CoFeO (CFO) nanoparticles on magnetic properties and their use in device applications as permanent magnets at room temperature. A set of CFO samples with different particle sizes and shapes were synthesized via the polymeric method by sintering at temperatures ranging from 300 °C to 1200 °C. These materials were characterized structurally by x-ray diffraction, morphologically by scanning electron microscopy, and microstructurally by transmission electron microscopy.