Skip to main content
Multi-State Memory and Multi-Functional Devices Comprising Magnetoplastic or Magnetoelastic Materials
Boise State Patents
  • Peter Müllner, Boise State University
  • William Knowlton, Boise State University
Document Type
Issued Date
Boise State University
Apparatus and methods are disclosed that enable writing data on, and reading data of, multi-state elements having greater than two states. The elements may be made of magnetoplastic and/or magnetoelastic materials, including, for example, magnetic shape-memory alloy or other materials that couple magnetic and crystallographic states. The writing process is preferably conducted through the application of a magnetic field and/or a mechanical action. The reading process is preferably conducted through atomic-force microscopy, magnetic- force microscopy, spin-polarized electrons, magnetooptical Kerr effect, optical interferometry or other methods, or other methods/effects. The multi functionality (crystallographic, magnetic, and shape states each representing a functionality) of the multi -state elements allows for simultaneous operations including read&write, sense&indicate, and sense&control. Embodiments of the invention may be used, for example, for storing, modifYing, and accessing data for device, sensor, actuator, logic and memory applications. Embodiments may be particularly effective for non-volatile memory or other read&write, sense&indicate, and/or sense&control functions in computer or other applications; such simultaneous operation of two (or more) of said multiple functionalities open new pathways for miniaturization of devices.

28 Claims, 13 Drawing Sheets

Citation Information
Peter Müllner and William Knowlton. "Multi-State Memory and Multi-Functional Devices Comprising Magnetoplastic or Magnetoelastic Materials" (2012)
Available at: