Calculation of the magnetic energy barrier in nanostructured cells of synthetic ferrimagnets

C. W. Han, J. K. Han, S. H. Lim

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


A method is proposed to calculate the magnetic energy barrier of nanostructured cells of synthetic ferrimagnets. An important feature of the method is the use of an equation for the total energy that contains the magnetostatic fields at the saddle point as parameters of the energy equation. With no suitable methods of accessing the magnetic configuration at the unstable saddle point, it is difficult to obtain the saddle point magnetostatic fields. This difficulty is overcome with the use of equations that link the magnetostatic fields at the saddle point and critical fields, which are readily obtained by micromagnetic simulation. The present method is essentially based on the micromagnetic simulation, and, therefore, it should provide accurate results for the magnetic energy barrier. A contour diagram showing the thermal stability parameter is constructed as a function of the cell geometry and the thickness asymmetry, and the result should be of great value in designing magnetic cells for high density magnetic random access memory.

Original languageEnglish
Article number094508
JournalJournal of Applied Physics
Issue number9
Publication statusPublished - 2009

Bibliographical note

Funding Information:
The Korea Science and Engineering Foundation (KOSEF) supported this work through the National Research Laboratory program, which is funded by the Korean Ministry of Science and Technology (Project No. M10600000198-06J0000-19810).

ASJC Scopus subject areas

  • Physics and Astronomy(all)


Dive into the research topics of 'Calculation of the magnetic energy barrier in nanostructured cells of synthetic ferrimagnets'. Together they form a unique fingerprint.

Cite this