IEEE S.F. Bay Area Council e-GRID's

Technology & Networking in Silicon Valley & the SF Bay Area: Upcoming Meetings, Courses and Conferences

January 25, 2010

Mtg: Heusler Compounds: Multifunctional Materials for Spintronics

by @ 9:19 am. Filed under ALL, Electronics Design, NanoEngineering, Optics/Displays

WEDNESDAY February 10, 2010
OEB Magnetics Chapter
Speaker: Prof. Claudia Felser, University Mainz, Germany
Time: Presentation at 3:00 PM
Cost: none
Place: Lawrence Berkeley National Laboratory, Berkeley
RSVP: Please respond by email with name, company, to Peter Fischer, by February 6

The development of magnetic Heusler compounds specifically designed as materials for spintronic applications has made tremendous progress in the very recent past.? Many problems in the field of spintronics still lack good solutions. The concept of half-metallic Heusler compounds provides a perspective for novel solutions.? Heusler compounds can be designed and made with high spin polarization and high Curie temperature, as well as, depending on the application, high spin injection efficiency, very low or high damping, tunable magnetic moment (low and high magnetic moment can be realized), and tunable anisotropy.? Thus, there is very high potential that many material-related problems, present in current-day 3d metal systems, can be overcome.? A big challenge is still the handling of interfaces with respect to their chemical (atomic diffusion and roughness), electronic (e.g., Schottky barrier design) and spin properties (spin injection and spin pumping).? In addition, potential for new phenomena and applications exists, using novel materials in the Heusler compound family, to name here novel semi-conducting Heusler compounds to be used as non-ferromagnetic spin conductors.
High spin polarisation and high Curie temperatures were found in Co2-Heusler compounds with values up to 1120 K in Co2FeSi. Mn2YZ compounds such as Mn3Ga are ferrimagnets with low magnetic moments despite their high Curie temperatures.? Due to the Jahn Teller instability of manganese in these materials, some of them show a tetragonal distortion, which renders out-of-plane magnetisation in thin films possible.? However, also the semiconducting half-Heusler compounds show promising properties.? Half-Heusler compounds such as TiNiSn have attracted attention as potential candidates for thermoelectric applications.? These complex C1b compounds can be designed as n- and p-type thermoelectrical materials with exceptionally large figure of merit, ZT ~1.5 at high temperatures.
The potential for application of these ternary compounds as multifunctional materials on a basis of a rational design will be discussed.

Comments are closed.

[IEEE S.F. Bay Area Council -] [powered by WordPress .]

SF Bay Area Council


  • 5G (2)
  • ALL (4,702)
  • Antennas & Propagation (5)
  • BioEngineering (675)
  • Blogroll (33)
  • Circuits (16)
  • Communications (1,862)
  • Computers/Software (1,777)
  • Consumer Electronics (103)
  • Control Systems (23)
  • Electrical/Power (1,284)
  • Electronics Design (2,774)
  • Employment (4)
  • Employment opportunities (7)
  • Engineering Mgmt (1,819)
  • Green energy (48)
  • History (7)
  • Industrial Applications (91)
  • Information Theory (13)
  • Instrument and Measurement (1)
  • Magnetics (30)
  • Microwave (8)
  • NanoEngineering (876)
  • Optics/Displays (969)
  • Photonics (31)
  • PhotoVoltaics (4)
  • Product Safety (25)
  • Reliability (37)
  • Robotics and Automation (19)
  • Semiconductors (1,847)
  • Signal Processing (138)
  • Vehicular Technology (16)
  • Women in Engineering (8)
  • Young Professionals (5)

    Support our advertisers:

    Visit our

    Enabling Javascript allows us to show you upcoming conferences in this column.

    For the Firefox browser, select Tools/Options/Content and select "Enable Javascript".

    If you are using Microsoft Internet Explorer you may need to click on the yellow bar above and select 'Allow Blocked Content'. You must then click 'Yes' on the following security warning.


    August 2019
    S M T W T F S
    « May    

    View in Google Calendar

    search blog:

    SUBSCRIBE: Get the e-GRID twice a month by email - upcoming IEEE SF Bay Area meetings, conferences.

    RSS Feed Subscribe to our RSS Feed.

    PUBLICIZE your event to IEEE's membership.

    general links:

    22 queries. 0.453 seconds