An experimental investigation of dynamic behavior in FePt systems

Journal of Physics Condensed Matter

Volumn 21, Issue 12, 2009, Pages

  Fuller, R O ^a   Koutsantonis, G A ^a   Stamps, R L ^a  

^a UNIVERSITY OF WESTERN AUSTRALIA   (Australia)

Author keywords

[No Author keywords available]

Indexed keywords

APPLIED FIELDS; COOPERATIVE EFFECTS; DYNAMIC BEHAVIORS; ENERGY DISTRIBUTIONS; EXPERIMENTAL INVESTIGATIONS; FE-PT NANOPARTICLES; LOW TEMPERATURES; MATRIXES; NON-EQUILIBRIUM DYNAMICS; RATE DISTRIBUTIONS; RELAXATION TIME;

EID: 65449175296     PISSN: 09538984     EISSN: 1361648X     Source Type: Journal    
DOI: 10.1088/0953-8984/21/12/124203     Document Type: Article

References (40)

1. Jönsson P E 2004 Superparamagnetism and spin glass dynamics of interacting magnetic nanoparticles Adv. Chem. Phys. 128 191
2. Dorman J L, Fiorani D and Tronc E 1997 Magnetic relaxation in fine-particle systems Adv. Chem. Phys. 98 283 (Pubitemid 127030749)
3. Lundgren L, Svedlindh P, Norblad P and Beckman O 1983 Dynamics of the relaxation-time spectrum in CuMn spin-glass Phys. Rev. Lett. 51 911
4. Jonsson T, Mattsson J, Djurberg C, Khan F A, Nordblah P and Svendlin P 1995 Aging in a magnetic particle system Phys. Rev. Lett. 75 4138
5. Parker D, Ladieu F, Vincent E, Mériguet G, Dubois D, Dupuis V and Perzynski R 2005 Experimental investigation of superspin glass dynamics J. Appl. Phys. 97 10A502
6. 3 Phys. Rev. B 72 144423
7. Cugliandolo L F and Kurchan J 1993 Analytical solution of the off-equilibrium dynamics of long-range spin-glass model Phys. Rev. Lett. 71 173
8. Berthier L and Bouchaud J-P 2002 Geometrical aspects of aging and rejuvenation in the Ising spin glass: a numerical study Phys. Rev. B 66 054404
9. Sasaki M, Jönsson P E, Takayama H and Mamiya H 2005 Aging and memory effects in superparamagnets and superspin glasses Phys. Rev. B 71 104405
10. Charkraverty S, Bandyopadhyay M, Chatterjee S, Dattagupta S, Frydman A, Sengupta S and Sreeram P A 2005 Memory in a magnetic nanoparticle system: polydispersity and interaction effects Phys. Rev. B 71 054401
11. Street R and Woolley J C 1949 A study of magnetic viscosity Proc. Phys. Soc. Lond. A 52 562
12. St Pierre T G, Gorham N T and Allen P D 2001 Apparent magnetic energy-barrier distribution in horse-spleen ferritin: evidence for multiple interacting magnetic entities per ferrihydrite nanoparticle Phys. Rev. B 65 024426
13. Fuller R O, Koutsantonis G A, Stamps R L and Bardou F 2005 Broad distributions of relaxation times in FePt nanoparticles J. Appl. Phys. 97 10J508
14. Gorham N T, Woodward R C, St Pierre T G, Terris B D and Sun S 2005 Apparent magnetic energy-barrier distribution in FePt nanoparticles J. Magn. Magn. Mater. 295 174-6
15. Kodama R H and Berkowitz A E 1999 Atomic-scale magnetic modeling of oxide nanoparticles Phys. Rev. B 59 6321
16. Mamiya H, Ohnuma M, Nakatani I and Furubayashi T 2006 New approach for magnetic relaxations in nanomagnet assemblies Europhys. Lett. 74 500
17. Sun S, Murray C B, Weller D, Folks L and Moser A 2000 Monodispersed FePt nanoparticles and ferromagnetic FePt nanocrystal superlattices Science 287 1989 (Pubitemid 30158668)
18. 0 FePt nanoparticles Appl. Phys. Lett. 81 2220
19. Gaunt P 1976 Magnetic viscosity in ferromagnets I. Phenomenological theory Phil. Mag. 34 775
20. Gaunt P 1986 Magnetic viscosity and thermal activation energy J. Appl. Phys. 59 4129
21. Rong C-B, Li Y and Liu J P 2007 Curie temperatures of annealed FePt nanoparticle systems J. Appl. Phys. 101 09K505
22. Batlle X, García del Muro M and Labarta A 1997 Interaction effects and energy barrier distribution on the magnetic relaxation of nanocrystalline hexagonal ferrites Phys. Rev. B 55 6440 (Pubitemid 127477610)
23. 20(111): LEED study of a catalyst Surf. Sci. 238 105-18
24. 20: LEIS results and model simulations Surf. Interface Anal. 25 177-90 (Pubitemid 127653050)
25. Bacon G E and Crangle J 1963 Chemical and magnetic order in platinum rich Pr+Fe alloys Proc. R. Soc. A 272 387
26. 3 by ion-beam synthesis J. Appl. Phys. 93 5656
27. Robach O, Quiros C, Valvisares S M, Walker C J and Ferrer S 2003 Structure and Pt magnetisim of FePt nanoparticles investigated with x-ray diffraction J. Magn. Magn. Mater. 264 202
28. Crew D C, Farrant S H, McCormick P G and Street R 1996 Measurement of magnetic viscosity in a Stoner-Wohlfarth material J. Magn. Magn. Mater. 163 299
29. Zhang X X, Ziolo R, Kroll E C, Bohigas X and Tejada J 1995 Magnetic relaxation and quantum tunneling in nanocrystalline particles J. Magn. Magn. Mater. 140-144 1853
30. 0 nanoparticles Phys. Rev. B 67 094422
31. Zeng H, Li J, Wang Z L, Liu J P and Sun S 2002 Interparticle interactions in annealed FePt nanoparticle assemblies IEEE Trans. Magn. 38 2598
32. Aharoni A 1987 Magnetic interaction between spheres IEEE Trans. Magn. 23 1853 (Pubitemid 17651282)
33. Aboaf J A, McGuire T R, Herd S R and Klokholm E 1984 Magnetic, transport, and structural properties of iron-platinum thin films IEEE Trans. Magn. 20 1642
34. Men'shikov A Z, Dorofeyev Y A, Kazantsev V A and Sidorov S K 1974 Magnetic structure of ordered iron-platinum alloys Fiz. Metal. Metalloved. 38 505 (Pubitemid 9421257)
35. Stahl B, Ellrich J, Theissmann R, Ghafari M, Bhattacharya S, Hahn H, Gajbhiye N S and Kramer D 2003 Electronic properties of 4 nm FePt particles Phys. Rev. B 67 014422
36. Donth E 2001 The Glass Transition Relaxation Dynamics in Liquids and Disordered Materials (Berlin: Springer)
37. g J. Physique 48 1533
38. 3 system Phys. Rev. B 72 014445
39. Gorham N T, Woodward R C, St Pierre T G, Stamps R L, Walker M J, Greig D and Matthew J A D 2004 Experimental determination of Lévy flight distributions of the energy barriers in spin glasses J. Appl. Phys. 95 6983 (Pubitemid 38693048)
40. El-Hilo M, O'Grady K and Popplewell J 1991 The peak in the TRM fine particle system J. Appl. Phys. 69 5133