TITLE

Improved thermal stability of synthetic ferrimagnetic media with enhanced exchange coupling strength

AUTHOR(S)
Inomata, A.; Abarra, E. N.; Acharya, B. R.; Ajan, A.; Okamoto, I.
PUB. DATE
April 2002
SOURCE
Applied Physics Letters;4/15/2002, Vol. 80 Issue 15, p2719
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The effect of the antiferromagnetic interlayer exchange coupling strength J between the initial or stabilization magnetic layer L1 and the top magnetic layer L2 on the thermal stability of synthetic ferrimagnetic media (SFM) is investigated. Enhanced J is achieved by the insertion of a thin Co-rich hexagonal close-packed layer between the Ru layer and L1, and such a structure did not change the read/write properties significantly. The contribution of the anisotropy energy of L1 to the thermal stability of SFM is improved by increasing J. However, a significant increase in the contribution of L1 to the thermal stability is achieved at relatively low J values (0.14 erg/cm[sup 2]) which translate into only a 3–4% increase in the switching field H[sub 0]. © 2002 American Institute of Physics.
ACCESSION #
6483039

 

Related Articles

  • Instability of one-dimensional quantum antiferromagnet under magnetic anisotropy. Apal'kov, D.M.; Zvyagin, A.A. // Low Temperature Physics;Sep98, Vol. 24 Issue 9, p633 

    Investigates the instability of a one-dimensional quantum antiferomagnet under magnetic anisotropy. Instability of the spin chain to the emergence of an easy-plane magnetic anisotropy; Influence of Jahn-Teller effect to the magnetic anisotropy; Production of magnetic anisotropy in the spin...

  • Exchange induced unidirectional anisotropy observed using Cr-Al antiferromagnetic films. Klemmer, T.J.; Inturi, V.R. // Applied Physics Letters;5/26/1997, Vol. 70 Issue 21, p2915 

    Examines the exchange induced unidirectional anisotropy in chromium-aluminum antiferromagnetic films. Measurement of the temperature dependence of the exchange field; Location of dominant domain wall pinning forces in the ferromagnetic layer; Estimation of the exchange coupling energy and...

  • Magnetic anisotropy energy of antiferromagnetic coupled Fe/Cr/Fe layers (abstract). Williams, C. M.; Krebs, J. J.; Prinz, G. A.; Chaiken, A. // Journal of Applied Physics;4/15/1991, Vol. 69 Issue 8, p5321 

    Presents the abstract of the study 'Magnetic Anisotropy Energy of Antiferromagnetic Coupled Fe/Cr/Fe Layers,' by C. M. Williams, J.J. Krebs, G.A. Prinz and A. Chaiken.

  • Coercivity and squareness enhancement in ball-milled hard magnetic–antiferromagnetic composites. Sort, J.; Nogue´s, J.; Surin˜ach, S.; Mun˜oz, J. S.; Baro´, M. D.; Chappel, E.; Dupont, F.; Chouteau, G. // Applied Physics Letters;8/20/2001, Vol. 79 Issue 8, p1142 

    The room-temperature coercivity, H[sub C], and squareness, M[sub R]/M[sub S] (remanence/saturation magnetizations), of permanent magnet, SmCo[sub 5] powders have been enhanced by ball milling with antiferromagnetic NiO (with Ne´el temperature, T[sub N]=590 K). This enhancement is observed in...

  • Thermal energy consideration in micromagnetic simulation for laminated antiferromagnetically coupled recording media. Hee, C. H.; Wang, J. P.; Piramanayagam, S. N.; Chong, T. C. // Applied Physics Letters;9/10/2001, Vol. 79 Issue 11 

    Contribution of thermal energy, has been included in the micromagnetic simulation of laminated antiferromagnetically coupled (LAC) media. The antiferromagnetic coupling constant, J, required to obtain M[sub r]t reduction in the existing simulation studies (T=0 K) of LAC media is much higher than...

  • Simplified analysis of two-layer antiferromagnetically coupled media. Richter, H. J.; Girt, Er.; Zhou, H. // Applied Physics Letters;4/8/2002, Vol. 80 Issue 14, p2529 

    Analytic expressions for the energy barrier at zero applied field and the switching field for a field applied along the easy axis are derived for a pair of antiferromagnetically coupled (AFC) single-domain particles at zero temperature. The energy barriers of the two single-domain particles add...

  • Effect of the buffer anisotropy on the rigidity of artificial antiferromagnetic hard magnetic layers in spin valve structures. Colis, S.; Dinia, A. // Journal of Applied Physics;4/15/2002, Vol. 91 Issue 8, p5268 

    We report on the magnetic and transport properties of artificially antiferromagnetically coupled CoFe/Ir/CoFe sandwiches (AAF), grown by molecular beam epitaxy on MgO(001) substrates. The sandwiches are deposited on Fe/Co/Cu/Co buffer layers and their magnetic properties are found to be strongly...

  • Orientational dependence of the exchange biasing in Ni-Fe/Mn... Konoto, Makoto; Tsunoda, Masakiyo // Journal of Applied Physics;4/15/1999 Part 2A of 2, Vol. 85 Issue 8, p4925 

    Presents information on a study which investigated the correlation between antiferromagnetic spin alignment at the interface and the exchange anisotropy by controlling the preferred orientation of the bilayers. Experimental procedure; Results and discussion; Conclusions.

  • Spin fanning configurations in antiferromagnetic layers with a uniaxial anisotropy and torque... Fujiwara, H.; Sun, M. // Journal of Applied Physics;4/15/1999 Part 2A of 2, Vol. 85 Issue 8, p4940 

    Presents information on a study which calculated the spin configurations in antiferromagnetic layers with an in-plane uniaxial anisotropy using numerical method. Calculation method; Results and discussion.

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics