Current Research
CHEMICALLY ORDERED L10 FeNi: A CANDIDATE MATERIAL FOR ADVANCED PERMANENT MAGNETS
Ferrous compounds with the L10 crystal structure have recently attracted considerable attention for the development of advanced rare-earth free permanent magnets. Among these, L10 FeNi (a.k.a. tetrataenite) is particularly promising...
MULTIDRIVER PROCESSING OF MAGNETOFUNCIONAL MATERIALS
The performance of magnetic materials is extraordinarily sensitive to manufacturing detrails that can alter atomic environments and structure at multiple length scales. Control of this aspect is investigated via an integrated experimental...
RARE-EARTH-FREE MATERIALS FOR MAGNETIC REFRIGERATION
The magnetocaloric effect (MCE) describes the temperature change in a material through exposure to a changing magnetic field. This is the basis of magnetic refrigeration, analogous to compression cooling, where an applied...
USING MAGNETISM TO PROMOTE NEUROREGNERATION
Human Peripheral Nervous System (PNS) injury is a leading cause of disabilities and can severely impact patients, quality of life. typical nerve repair procedures require neuroregeneration, which refers to the growth or repair of nerve tissue, cells...
EXPLORE TECHNOLOGICAL POTENTIALS OF AMORPHOUS MAGNETIC MICROWIRES
Magnetic systems can transfer energy and information wirelessly between components to functionalize a variety of advanced technologies. New types of magnetic materials will play a significant role in improving the energy efficiency...
ENHANCING THE BIOCIDAL CAPABILITY OF Cu2O COATINGS
The COVID-19 pandemic has shed light on the need for antimicrobial surfaces that down regulate the transmission of pathogens through touching commonly encountered surfaces such as handrails and door handles, without requiring...
Past Research
EXCHANGE COUPLING IN MAGNETIC NANOCOMPOSITES
Local magnetic interactions between magnetic components exchange-spring systems strongly depend upon the chemical and topographical nature of the interface. Relationships between the exchange coupling, the microstructure...
MAGNETIC NANOPARTICLES IN MICROFLUIDIC SYSTEMS
Magnetic nanoparticle-based microfluidic separation of circulating tumor cell populations enables understanding of the spreading of cancer and fosters development of various drug strategies. In this work we developed a microfluidic...
STRANGE MAGNETIC BUBBLES AT ROOM TEMPERATURE
Skyrmions are nanometer-size magnetic bubbles that can be moved and manipulated with electric fields and currents, and could thus be used as memory bits in high-density magnetic RAM (MRAM) memories. Our recent work discovered...
MAKING TOPOLOGICAL INSULATORS MAGNETIC
A goal of research in topological insulators (TI) is to imbue them with magnetism. Doing this in the right way leads to a semiconductor that is nearly superconducting, through the quantum anomalous Hall effect (QAHE). The figure shows...
TOPOLOGICAL HEUSLER MATERIALS
Recent theoretical work on Heusler compounds has led to predictions that several compounds should have topological properties. This work stems from our discovery of the giant anomalous Hall effect (AHE) in Co2MnAl that we published...
MAKING GRAPHENE MAGNETIC
Graphene is a marvelous material with remarkable properties resulting from the single layer of carbon atoms. However, a major disadvantage is that the light carbon atoms have very small spin-orbit interaction. A recent letter in Nature...
NANOTUBE ARRAYS
TiO2 Nanotube Arrays doped with iron are anticipated to exhibit multifunctional behavior that combines effects from electronic charge, magnetic spin and optical response. Properly engineered, these materials hold promise for...
MAGNETOSTRUCTURAL MATERIALS
Magnetostructural materials exhibit simultaneous magnetic and structural phase changes of an abrupt and hysteretic nature that are fundamentally different from the canonical ferromagnetic transition of second-order thermodynamic...
UNDERSTANDING PHASE FORMATION AND COEXISTENCE IN FeMn-BASED ALLOYS
Exchange anisotropy is a unique type of magnetic anisotropy that originates from a quantum mechanical exchange interaction at the interface of a ferromagnetic (FM) material and an antiferromagnetic (AF) material. This interaction...
RARE-EARTH-FREE EXCHANGE COUPLED PERMANENT MAGNETS
The demand for rare-earth elements is currently outstripping supply and leading to what is known popularly in the press as the "rare earth crisis". This demand arises from the many applications for rare-earth element including the rare-earth...
GAPLESS, LOW-MOMENT AND SPIN FILTER SEMICONDUCTORS FOR SPINTRONICS
The efficient production of spin-polarized currents at room temperature is fundamental to the advancement of spintronics. Spin-polarized currents can be generated several ways: by passing an unpolarized current through a...