The influence of irradiation with white light on the permeability at 77 K is investigated on p-type yttrium iron garnet single crystals with Pb impurity. Theexistence of an irreversible photo-magnetic effect and photo-accelerated disaccommodation is demonstrated in p-type YIG. These effects are explained by a modified two center model in which Fe4+ plays an important role.

A novel electric and magnetic field tunable microwave resonator with a yttrium iron garnet and barium strontium titanate layered structure is investigated. The measured characteristics at 3.6 GHz, corresponding to the proximity of magnetic and dielectric resonance modes, show a broadband electrical tunability. A tuning range of 1.5% of the central resonance frequency is obtained for nominal ele...

Dissertation Title : Development of Magnetic Field Sensors Using Bismuth – Substituted Garnets Thin Films with In-Plane Magnetization Iulian Nistor, Ph.D., 2006 Dissertation Directed By: Professor of Engineering Isaak D. Mayergoyz, Electrical and Computer Engineering Department, and Dr. Charles Krafft, Laboratory for Physical Sciences In the dissertation, the use of magnetic single crystal Bism...

Many geochemical models of major igneous differentiation events on the Earth, the Moon, and Mars invoke the presence of garnet or its high-pressure majoritic equivalent as a residual phase, based on its ability to fractionate critical trace element pairs (Lu/Hf, U/Th, heavy REE/light REE). As a result, quantitative descriptions of mid-ocean ridge and hot spot magmatism, and lunar, martian, and ...

Since 2007, at the Electron Science Research Institute (ESRI) nano-fabrication laboratories, Edith Cowan University, Australia, we have devoted research efforts to synthesis and characterization of bismuth-containing ferrite-garnet-type thin-film magneto-optic (MO) materials different compositions. We report on growth characteristics radio frequency (RF) magnetron sputtered bismuth-substituted ...

Spin-phonon interaction is an important channel for spin and energy relaxation in magnetic insulators. Understanding this critical developing insulator-based spintronic devices. Quantifying yttrium iron garnet (YIG), one of the most extensively investigated insulators, remains challenging because large number atoms a unit cell. Here, we report temperature-dependent polarization-resolved Raman m...