Presentation Title
Comparison Between V2O5 and VO2 Precursors in the Synthesis of HoV1-xFexO3
Faculty Mentor
Stephen Tsui
Start Date
18-11-2017 12:30 PM
End Date
18-11-2017 1:30 PM
Location
BSC-Ursa Minor 131
Session
Poster 2
Type of Presentation
Poster
Subject Area
physical_mathematical_sciences
Abstract
Comparison Between V2O5 and VO2 Precursors in the Synthesis of HoV1-xFe xO3
We investigate the synthesis and magnetic behavior of the orthoferrivanadate compound HoV1-xFexO3, a chemically doped variant of HoFeO3 which is known to have an electronic spin reorientation transition at low temperature. Complications can arise in trying to concurrently stabilize a reduced V3+ cation with the oxidized Fe3+ cation, so we investigate the consequences of substituting V3+ using two different vanadium precursors: V2O5 and VO2 to create the HoFe0.5V0.5 O3. The polycrystalline compounds were prepared by solid state reaction method using purity > 99% powders of Ho2O3, Fe2O3 , VO2 , and V2O5. The materials were ground via mortar and pestle, hydraulically pressed into pellets, and sintered at 1200o C and then 1400o C. Additional complications can arise due to the possible vanadium oxidation states of V2+,V4+ , and V5+. The crystal structure was obtained using X-ray diffraction, and the magnetic properties were characterized via vibrating sample magnetometry.
Comparison Between V2O5 and VO2 Precursors in the Synthesis of HoV1-xFexO3
BSC-Ursa Minor 131
Comparison Between V2O5 and VO2 Precursors in the Synthesis of HoV1-xFe xO3
We investigate the synthesis and magnetic behavior of the orthoferrivanadate compound HoV1-xFexO3, a chemically doped variant of HoFeO3 which is known to have an electronic spin reorientation transition at low temperature. Complications can arise in trying to concurrently stabilize a reduced V3+ cation with the oxidized Fe3+ cation, so we investigate the consequences of substituting V3+ using two different vanadium precursors: V2O5 and VO2 to create the HoFe0.5V0.5 O3. The polycrystalline compounds were prepared by solid state reaction method using purity > 99% powders of Ho2O3, Fe2O3 , VO2 , and V2O5. The materials were ground via mortar and pestle, hydraulically pressed into pellets, and sintered at 1200o C and then 1400o C. Additional complications can arise due to the possible vanadium oxidation states of V2+,V4+ , and V5+. The crystal structure was obtained using X-ray diffraction, and the magnetic properties were characterized via vibrating sample magnetometry.