Micromagnetic studies of three-dimensional pyramidal shell structures

New Journal of Physics

Volumn 12, Issue , 2010, Pages

  Knittel, A ^a   Franchin, M ^a   Fischbacher, T ^a   Nasirpouri, F ^c   Bending, S J ^b   Fangohr, H ^a  

^a UNIVERSITY OF SOUTHAMPTON   (United Kingdom)

^b UNIVERSITY OF BATH   (United Kingdom)

^c SAHAND UNIVERSITY OF TECHNOLOGY   (Iran)

Author keywords

[No Author keywords available]

Indexed keywords

ASYMMETRIC VORTICES; CORE SHELL STRUCTURE; EQUIVALENT STATE; HYSTERESIS MEASUREMENTS; LIMITING CASE; MAGNETIC CONFIGURATION; MAGNETIC GROUND STATE; METASTABILITIES; MICROMAGNETIC MODELS; MICROMAGNETIC STUDY; NON-MAGNETIC CORES; RECENT PROGRESS; S STATE; SHELL STRUCTURE; SHELL THICKNESS; SINGLE-DOMAIN STATE; SIZE RANGES; STRUCTURE SIZES; SYSTEM SIZE; THREE-DIMENSIONAL STRUCTURE; ULTRA-THIN; VORTEX STATE;

GROUND STATE; MAGNETIC CIRCUITS; MAGNETIC PROPERTIES; MAGNETIC RECORDING; MAGNETOCRYSTALLINE ANISOTROPY; NUMERICAL ANALYSIS; PHASE DIAGRAMS; THREE DIMENSIONAL; VORTEX FLOW;

SHELLS (STRUCTURES);

EID: 78650160622     PISSN: 13672630     EISSN: None     Source Type: Journal    
DOI: 10.1088/1367-2630/12/11/113048     Document Type: Article

References (37)

1. Cowburn R P 2000 Property variation with shape in magnetic nanoelements J. Phys. D: Appl. Phys. 33 R1-16
2. Martín J I, Nogués J, Liu K, Vicent J L and Schuller I K 2003 Ordered magnetic nanostructures: fabrication and properties J. Magn. Magn. Mater. 256 449-501
3. Shukla N, Liu C and Roy A G 2006 Oriented self-assembly of cubic FePt nanoparticles Mater. Lett. 60 995-8
4. Ung D, Tung L D, Caruntu G, Delaportas D, Alexandrou I, Prior I A and Thanh N T K 2009 Variant shape growth of nanoparticles of metallic Fe-Pt, Fe-Pd and Fe-Pt-Pd alloys CrystEngComm 11 1309-16
5. Cowburn R P and Welland M E 1998 Micromagnetics of the single-domain state of square ferromagnetic nanostructures Phys. Rev. B 58 9217-26
6. Goll D, Schütz G and Kronmüller H 2003 Critical thickness for high-remanent single-domain configurations in square ferromagnetic thin platelets Phys. Rev. B 67 094414
7. Kronmüller H, Goll D, Hertel R and Schütz G 2004 Critical thicknesses of domain formations in cubic particles and thin films Physica B 343 229-35
8. Lai M-F and Liao C-N 2008 Size dependence of c and s states in circular and square permalloy dots J. Appl. Phys. 103 07E737
9. Cowburn R P, Koltsov D K, Adeyeye A O, Welland M E and Tricker D M 1999 Single-domain circular nanomagnets Phys. Rev. Lett. 83 1042-5
10. Kin Ha J, Hertel R and Kirschner J 2003 Micromagnetic study of magnetic configurations in submicron permalloy disks Phys. Rev. B 67 224432
11. Schabes M E and Bertram H N 1988 Magnetization processes in ferromagnetic cubes J. Appl. Phys. 64 1347-57
12. Rave W, Fabian K and Hubert A 1998 Magnetic states of small cubic particles with uniaxial anisotropy J. Magn. Magn. Mater. 190 332-48
13. Garcìa-Cervera C J, Gimbutas Z and Weinan E 2003 Accurate numerical methods for micromagnetics simulations with general geometries J. Comput. Phys. 184 37-52
14. Ross C A, Farhoud M, Hwang M, Smith H I, Redjdal M and Humphrey F B 2001 Micromagnetic behavior of conical ferromagnetic particles J. Appl. Phys. 89 1310-9
15. Boardman R P, Fangohr H, Fairman M J, Zimmermann J, Cox S J, Zhukov A A and de Groot P A J 2007 Micromagnetic modelling of ferromagnetic cones J. Magn. Magn. Mater. 312 234-8
16. Boardman R P, Fangohr H, Cox S J, Goncharov A V, Zhukov A A and de Groot P A J 2004 Micromagnetic simulation of ferromagnetic part-spherical particles J. Appl. Phys. 95 7037
17. Boardman R P, Zimmermann J, Fangohr H, Zhukov A A and de Groot P A J 2005 Micromagnetic simulation studies of ferromagnetic part spheres J. Appl. Phys. 97 10E305
18. Williams W, Muxworthy A R and Paterson G A 2006 Configurational anisotropy in single-domain and pseudosingle-domain grains of magnetite J. Geophys. Res. 111 B12S13
19. Hertel R, Fruchart O, Cherifi S, Jubert P-O, Heun S, Locatelli A and Kirschner J 2005 Three-dimensional magnetic-flux-closure patterns in mesoscopic Fe islands Phys. Rev. B 72 214409
20. Goll D, Berkowitz A E and Bertram H N 2004 Critical sizes for ferromagnetic spherical hollow nanoparticles Phys. Rev. B 70 184432
21. Nasirpouri F, Engbarth M, Bending S J, Peter L M, Knittel A and Fangohr H 2010 Growth and magnetisation of highly-faceted three-dimensional ferromagnetic/non-ferromagnetic core/shell structures, submitted
22. Kronmüller H and Fähnle M 2003 Micromagnetism and the Microstructure of Ferromagnetic Solids (Cambridge: Cambridge University Press)
23. Fischbacher T, Franchin M, Bordignon G and Fangohr H 2007 A systematic approach to multiphysics extensions of finite-element-based micromagnetic simulations: Nmag IEEE Trans. Magn. 43 2896-8
24. Fredkin D R and Koehler T R 1990 Hybrid method for computing demagnetizing fields IEEE Trans. Magn. 26 415-7
25. Hackbusch W 1999 A sparse matrix arithmetic based on H-matrices. Part I: introduction to H-matrices Computing 62 89-108
26. Börm S and Grasedyck L 2005 Hybrid cross approximation of integral operators Numer. Math. 101 221-49
27. Knittel A, Franchin M, Bordignon G, Fischbacher T, Bending S and Fangohr H 2009 Compression of boundary element matrix in micromagnetic simulations J. Appl. Phys. 105 07D542
28. Rave W, Ramstöck K and Hubert A 1998 Corners and nucleation in micromagnetics J. Magn. Magn. Mater. 183 329-33
29. Raizer A, Hoole S R H, Meunier G and Coulomb J-L 1990 p- and h-type adaptive mesh generation J. Appl. Phys. 67 5803-5
30. Donahue M J 1998 A variational approach to exchange calculations in micromagnetics J. Appl. Phys. 83 6491-3
31. Long H H, Ong E T, Liu Z J and Li E P 2006 Fast Fourier transform on multipoles for rapid calculation of magnetostatic fields IEEE Trans. Magn. 42 295-300
32. Suess D, Tsiantos V, Schrefl T, Fidler J, Scholz W, Forster H, Dittrich R and Miles J J 2002 Time resolved micromagnetics using a preconditioned time integration method J. Magn. Magn. Mater. 248 298-311
33. Hindmarsh A C, Brown P N, Grant K E, Lee S L, Serban R, Shumaker D E andWoodward C S 2005 Sundials: suite of nonlinear and differential/algebraic equation solvers ACM Trans. Math. Softw. 31 363, 2005
34. Muxworthy A R andWilliamsW2006 Critical single-domain/multidomain grain sizes in noninteracting and interacting elongated magnetite particles: implications for magnetosomes J. Geophys. Res. 111 B12S12
35. Miltat J and Thiaville A 2002 FERROMAGNETISM: vortex cores-smaller than small Science 298 555
36. Cowburn R P and Welland M E 1998 Phase transitions in planar magnetic nanostructures Appl. Phys. Lett. 72 2041-3
37. Wachowiak A, Wiebe J, Bode M, Pietzsch O, Morgenstern M and Wiesendanger R 2002 Direct observation of internal spin structure of magnetic vortex cores Science 298 577-80