IRG 2

Complex Metal Oxides

IRG 2 Leaders:

paul evans

Paul Evans
1105 Engineering Research Building
1500 Engineering Dr
Madison, WI 53706
608-265-6773
pgevans@wisc.edu

Jordan R. Schmidt 
Department of Chemistry
1101 University Ave
Madison, WI 53706
608-262-2996
schmidt@chem.wisc.edu

More group members

 

Complex metal oxides are a diverse and highly versatile class of materials that can exhibit scientifically and technologically important behaviors ranging from magnetism to piezoelectricity.  New technologies and new fields of applications can be realized by expanding the scope of available ionic compositions and increasing the geometric complexity of nanostructures formed from crystalline oxide materials. IRG 2 focuses on probing the synthesis of oxides, increasing the range of available oxide compositions, and forming unique nanostructures – directions that are each enabled by use of novel transformations from the amorphous to crystalline form. This process of solid phase epitaxy, or SPE, allows the crystallization of materials that cannot be made through conventional processing techniques and provides the freedom to develop new materials and explore new properties.

 

IRG 2 Highlights

  • (2022) Computationally Designed Synthesis of Complex Oxide Materials

    The useful properties of chemical compounds are determined by the elements from which they are made and the arrangement of the atoms. However, there are often several ways atoms of the same elements can be arranged to form a solid. Wisconsin MRSEC researchers are particularly interested in a series of compounds formed from rare-earth elements and iridium. One phase, Pr2Ir2O7, is of particular interest because it exhibits novel magnetic phenomena and can open new opportunities in the field of quantum materials.

  • (2022) Nanoscale Oxide Solid Phase Epitaxy

    The crystallization of complex oxides can be templated by a crystalline seed. Nanoscale crystallization environments lead to the possibility that this process can be employed to create precise arrays of nanoscale materials for electronic, magnetic, and optical applications.

  • Janicki Wins WISL Award for Communicating PhD Research to the Public

    Recent Chemistry doctoral graduate, Tesia Janicki, was awarded the Wisconsin Initiative for Science Literacy (WISL) Award for Communicating PhD Research to the Public. Her chapter in her PhD thesis, “Atomistic computational approaches in molecular models and inorganic crystallization,” is a series of cartoons explaining key concepts of chemistry and of Janicki’s doctoral work.

  • Samuel Marks at Argonne with the Wisconsin MRSEC X ray Endstation for Nanoscale Transformations (MXNT)

    Wisconsin MRSEC Researchers Develop New Cutting-Edge Tool for Materials Discovery

    A team of researchers from the Wisconsin Materials Research Science and Education Center (MRSEC) at the University of Wisconsin–Madison has designed, constructed, and implemented a new, highly specialized piece of research equipment that can be used to visualize the real-time formation and growth of tiny crystals of novel materials. The unique perspective provided by this approach provides access to new ways to discover and develop materials relevant to electronics, optics, and magnetic applications.

  • (2020) Solid-Phase Crystallization Produces Oxide Buffer Layers Lattice-Matched to Semiconductors

    Engineers currently lack good substrate materials on which to grow thin films of materials like GaN with few defects. These layers are needed in applications like high-power transistors and solid-state lighting. Available bulk crystals have the wrong crystal structure or the wrong distance between the atoms. The Wisconsin MRSEC has developed a buffer layer material and related synthesis method that promises to alleviate the substrate problem.

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