Quick search Find article
Quick search
Find article

An Effective Three-Dimensional Micromagnetic Method and Its Application to Magnetic Tunnel Junctions

Liu Yao-Wen1, Chen Yu-Guang1, Yang Ya-Ping1, Chen Hong1 and Martins J. L.2

Show affiliations


An effective three-dimensional micromagnetic method for predicting equilibrium configuration of magnetization states is presented with conjugate-gradient technique to minimize the total energy, which has a much faster convergence rate than that of the quasi-Newton method. As an application, magnetic tunnel junctions with pinholes in the ultrathin barrier are simulated. The calculated coupling field Hf increases with the pinhole density increase, corresponding to the decrease of barrier thickness. The free layer domain configuration of tunnel junction during the switching process is also demonstrated.


PACS

75.60.Ej Magnetization curves, hysteresis, Barkhausen and related effects

75.40.Mg Numerical simulation studies

75.70.Kw Domain structure (including magnetic bubbles)

Subjects

Condensed matter: electrical, magnetic and optical

Surfaces, interfaces and thin films

Dates

Issue 5 (May 2005)

Received 9 November 2004



  1. An Effective Three-Dimensional Micromagnetic Method and Its Application to Magnetic Tunnel Junctions

    Liu Yao-Wen et al 2005 Chinese Phys. Lett. 22 1270

  2. Magnetic turbulence in space plasmas: in and around the Earth's magnetosphere

    Gaetano Zimbardo 2006 Plasma Phys. Control. Fusion 48 B295

  3. Statistical properties of electrostatic turbulence in toroidal magnetized plasmas

    B Labit et al 2007 Plasma Phys. Control. Fusion 49 B281

  4. Edge turbulence measurements in toroidal fusion devices

    S J Zweben et al 2007 Plasma Phys. Control. Fusion 49 S1

  5. Channel formation in single-monolayer pentacene thin film transistors

    B-N Park et al 2007 J. Phys. D: Appl. Phys. 40 3506

  6. Cyclic cluster model for calculating defects in solids using the local density approximation

    J Miró et al 1997 J. Phys.: Condens. Matter 9 9555

  7. A molecular radical model for hydrogen and muonium in graphite

    S F J Cox et al 2001 J. Phys.: Condens. Matter 13 2169

  8. The di-interstitial in graphite

    C D Latham et al 2008 J. Phys.: Condens. Matter 20 395220

  9. Glide dislocations in diamond: first-principles calculations of similarities with and differences from silicon and the effects of hydrogen

    M I Heggie et al 2002 J. Phys.: Condens. Matter 14 12689

  10. Electron spectroscopy of carbon materials: experiment and theory

    A A El-Barbary et al 2006 J. Phys.: Conf. Ser. 26 149

Related review articles

What's this?
View review articles related to this research to gain an insight into the key trends in this subject area. Related review articles are selected based on PACS/MSC codes, and are no more than three years old.

  1. Electron theory of fast and ultrafast dissipative magnetization dynamics
  2. Exchange bias effect in alloys and compounds
  3. Diamagnetic (Condon) domains
More

View by subject




Export








Please login to access our web services, or create an account if you don't yet have one.

You must have cookies enabled in your web browser to be able to login.

Username
Password

Forgotten your password? Get a new one here.