Synthesis of 4d- and 5d-Element Based Transition Metal Oxides

Overview

Transition metal oxides (TMOs) have long been the topic of research due to their wide range of potential technological applications (e.g., high-density magnetic data storage and spintronics). 4d- and 5d-element based TMOs in particular exhibit properties that have not been observed in 3d-TMOs, as a result of the presence of strong spin-orbit interaction (SOI), as well as competition of SOI with comparable energy scales, like the Coulomb interaction. This research focused primarily on the synthesis of TMOs containing the elements molybdenum, ruthenium, niobium, and tungsten. Both polycrystalline and single crystal synthesis were performed. Characterization techniques such as powder x-ray diffraction (powder XRD) and energy dispersive x-ray spectroscopy (EDS) were done on the crystals to determine the resulting phase(s) of each attempted crystal growth. Although many crystals were synthesized, EDS data demonstrated that the atomic ratio of strontium to ruthenium in my single crystal samples was 1:1. This indicates that the single crystal growth of Sr2Ru2O7 was possibly successful. More data must be collected through single crystal x-ray diffraction (sXRD) for complete verification. Future measurements of the magnetization, heat capacity, and resistivity of the single crystal samples may reveal that the crystals have properties which give them the potential to advance modern technology.

Competition history

• JSHS 2023 Category not listed

Resources

• National JSHS abstract book ↗

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