Speaker
Jory Korobanik
(Brock University)
Description
Geometrically frustrated magnetic materials have attracted scientific interest due to exotic low temperature states such as the spin ice compound Ho$_{2}$Ti$_{2}$O$_{7}$. In this material, spin disorder mimics the proton disorder found in water ice, which exhibits magnetic monopole-like excitations.$^{1}$ Frustration occurs when magnetic ions are arranged in geometries where exchange interactions can not be satisfied by all nearest neighbours. Typical structures that yield frustration are triangular in nature. Spinels (AB$_{2}$O$_{4}$) exhibit frustration when magnetic ions occupy the B sites.$^{2}$
This work seeks to determine and understand how magnetic dilution and applied pressure affect the magnetic ground state of GeFe$_{2}$O$_{4}$.
[1]Harris et al, Phys. Rev. Lett. 79, 2554 (1997).
[2]] J. Greedan, J. Mater. Chem.,11, 37-53 (2001).
Authors
Dr
Fereidoon Razavi
(Brock University)
Jory Korobanik
(Brock University)
