Control of the multiferroic transition in Ni3V2O8by transition metal doping

Effects of transition metal doping on multiferroic ordering in ni3v2o8 and fevo4

EFFECTS OF TRANSITION METAL DOPING ONMULTIFERROIC ORDERING INNi3V2O8 ANDFeVO4byAKILA KUMARASIRIDecember 2012Advisor : Dr. Gavin LawesMajor : PhysicsDegree : Doctor of PhilosophyWe have studied the effects of doping both non-magnetic and magnetic ions on the phasetransitions and multiferroic ordering in two multiferroic oxides; Ni3V2O8 and FeVO4. M...

Spin doping using transition metal phthalocyanine molecules

Molecular spins have become key enablers for exploring magnetic interactions, quantum information processes and many-body effects in metals. Metal-organic molecules, in particular, let the spin state of the core metal ion to be modified according to its organic environment, allowing localized magnetic moments to emerge as functional entities with radically different properties from its simple a...

Atomic-scale Modeling of Transition-metal Doping of Semiconductor Nanocrystals

3d transition metal doping of semiconducting boron carbides

The introduction metallocenes, in particular ferrocene (Fe(η-C5H5)2), cobaltocene (Co(η-C5H5)2), and nickelocene (Ni(η-C5H5)2), together with the carborane source molecule closo-1,2-dicarbadodecaborane, during plasma enhanced chemical vapor deposition, will result in the transition metal doping of semiconducting boron carbides. Here we report using ferrocene to introduce Fe dopants, and a semic...

Self-doping of ultrathin insulating films by transition metal atoms.

Single magnetic Co atoms are deposited on atomically thin NaCl films on Au(111). Two different adsorption sites are revealed by high-resolution scanning tunneling microscopy (STM), i.e., at Na and at Cl locations. Using density functional based simulations of the STM images, we show that the Co atoms substitute with either a Na or Cl atom of the NaCl surface, resulting in cationic and anionic C...