Physics Seminar Schedule, Fall 2010

4:15pm, Room 46 Culler Hall, unless otherwise noted

Past Seminar Schedules

Date   Speaker   Title and Abstract or Field
September 1
 

Faculty Poster Session

Location: Culler Hall Basement

  Opportunities for research with the Physics Department
September 8
 

Undergraduate Presentations

AJ Hachtel (USS w/ Bali)

Megan Marshall (REU Baylor)

Robert Misconin (NASA Internship)

Daniel Wentzel (NASA Internship)

 

Undergraduate Research

September 15  

Undergraduate Presentations

Don Kane (USS w/ Bali)

Jeffrey Kleykamp (USS w/ Bali)

Erik Rotterman (USS w/ Urayama)

  Undergraduate Research

September 22

 

Miami University Alumnus

Russ Starkey

   

September 29

 

 

Yogesh Joglekar

IUPUI

  Condensed Matter

October 6

 

Arfken Scholar

Bediha Beser

Temple University

  Spectroscopy
October 13  

Miami University Alumna

Kathy Koenig

Wright State University

 

Increasing retention rates among engineering students

October 20  

Miami University Alumna

Dyan McBride

Mercyhurst College

  Her first year as a Physics Professor
October27  

Arfken Scholar

Andrew Kunz

Marquette University

  Controlling Domain Wall Dynamics in Ferromagnetic Nanowires  Abstract »
November 3
 

Graduate Student

Brian Kaster

Miami University Physics Department

 

Magnetic Properties of CoFeS2

November 10  

Liese Van Zee

Indiana University

 

Chemical Enrichment of Nearby Galaxies

November 17  

Andrei Kogan

University of Cincinnati

  Nanotechnology
November 24   No Seminar - Thanksgiving Break    

December 1

 

Wesley Walter

Denison University

  Negative Ions: Probing Correlation & Dynamics with Lasers and Synchotrons
December 8  

Graduate Student

Emmy Mills

Miami University Physics Department

  GSTEP: SPS Outreach Project

 


 Full Abstracts

 

October 27, 2010

Andrew Kunz, Marquette University
Controlling Domain Wall Dynamics in Ferromagnetic Nanowires

Spintronic devices exploit the spin of the electron and its associated magnetic moment to sense, transport and store information. Recently there has been a particular interest in developing devices that depend on the magnetic properties of long, thin wires where the logical information is encoded by the transition between two magnetic domains. This transition region, called a domain wall, can be moved to change the logic value. Essentially controlling the motion of the domain wall is critical for realizing new fast, high-density non-volatile data storage devices. Control includes injection/nucleation, moving, and stopping/positioning the domain wall precisely with speed and reliability.  Using micromagnetic simulation we demonstrate how a combination of externally applied magnetic fields is used to quickly inject, move, and accurately place multiple domain walls within a single wire. The use of a magnetic field component applied perpendicular to the principle domain wall driving field is found to be critical for increased speed and reliability.  The effects of the transverse field on the injection and trapping of the domain wall will be shown to be of particular importance.

 

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