Solid State Synthesis and Characterization of Chiral Magnetic Oxides
Disciplines
Condensed Matter Physics
Abstract (300 words maximum)
A crystal structure (regular and periodic arrangement of atoms or molecules) is said to be chiral if the mirror image of the crystal structure is not superimposable to the original image. Chiral structured magnetic oxides are subjects of recent investigation from fundamental science perspectives as well as their technologically relevant properties. Chirality favors asymmetric interactions (Dzyalloshinskii-Moriya (DM) interaction); the interplay of asymmetric DM interaction and the symmetric exchange interaction generally results in the formation of unconventional magnetic structures such as the magnetic skyrmion. Magnetic skyrmions are topologically protected, nanosized magnetic structures that have promising applications in reliable, fast paced information storage and transfer devices. With this motivation, we are investigating chiral magnetic oxides belonging to the MMoTeO6 (M=Fe, Co) family. We have synthesized phase pure polycrystalline samples MnMoTeO6 and CoMoTeO6 using conventional solid state reaction method and characterized their structural and magnetic properties using X-ray diffraction, Raman scattering, magnetometry, and dielectric techniques. Our results are consistent with a picture of non-collinear magnetic materials with strong magneto-dielectric properties. I will present the method of synthesis and results of our structural and magnetic characterization.
Academic department under which the project should be listed
Physics
Primary Investigator (PI) Name
Chetan Dhital
Additional Faculty
Zhe Chuan Feng, Electrical and Computer Engineering, zfeng6@kennesaw.edu
Evara Rogers, Engineering, eroger54@kennesaw.edu
Solid State Synthesis and Characterization of Chiral Magnetic Oxides
A crystal structure (regular and periodic arrangement of atoms or molecules) is said to be chiral if the mirror image of the crystal structure is not superimposable to the original image. Chiral structured magnetic oxides are subjects of recent investigation from fundamental science perspectives as well as their technologically relevant properties. Chirality favors asymmetric interactions (Dzyalloshinskii-Moriya (DM) interaction); the interplay of asymmetric DM interaction and the symmetric exchange interaction generally results in the formation of unconventional magnetic structures such as the magnetic skyrmion. Magnetic skyrmions are topologically protected, nanosized magnetic structures that have promising applications in reliable, fast paced information storage and transfer devices. With this motivation, we are investigating chiral magnetic oxides belonging to the MMoTeO6 (M=Fe, Co) family. We have synthesized phase pure polycrystalline samples MnMoTeO6 and CoMoTeO6 using conventional solid state reaction method and characterized their structural and magnetic properties using X-ray diffraction, Raman scattering, magnetometry, and dielectric techniques. Our results are consistent with a picture of non-collinear magnetic materials with strong magneto-dielectric properties. I will present the method of synthesis and results of our structural and magnetic characterization.