RARE EARTH - IRON MIXED OXIDES: A REVIEW Mala Nath*, C.L. Sharma and N. Bharti Chemistry Department, University of Roorkee, Roorkee - 247 667, India CONTENTS 1. INTRODUCTION 138 2. SYNTHESIS OF THE RARE EARTH-IRON MIXED OXIDES 138 2.1 Ceramic Method 139 2.2 Melt Growth Method 140 2.3 Flux Growth Method 140 2.4 Hydrothermal Growth Method 141 2.5 Growth of Thin Layers 141 2.6 Coprecipitation Method (Solid-State Precursor Method) 143 3. PROPERTIES AND STRUCTURAL STUDIES 144 3.1 Magnetic Properties 144 3.2 Mössbauer Studies 153 3.3 X-Ray Diffraction Studies 161 3.4 Thermal Studies 162 3.5 Electron Probe Micro-Analysis 163 3.6 Magneto-Optic and Optical Properties 163 3.7 Ferromagnetic Resonance Studies 169 3.8 Electron Optical Studies and Microstructures 176 3.9 Neutron Diffraction Studies 176 4. APPLICATIONS OF RARE EARTH-IRON MIXED OXIDES 176 4.1 Transformer Cores 177 4.2 Information Storage 177 4.3 Magnetic Bubble Memory 177 4.4 Permanent Magnets 178 5. REFERENCES 178 137 Brought to you by | New York University Bobst Library Technical Services Authenticated Download Date | 6/8/15 9:08 PM