Reversal mechanisms and interactions in magnetic systems: Coercivity versus switching field and thermally assisted demagnetization

Boletin de la Sociedad Espanola de Ceramica y Vidrio

Volumn 44, Issue 3, 2005, Pages 169-176

  Cebollada, F ^a   Gonzalez J M ^b,c   De Frutos, J ^a   Gonzalez A M ^a  

^a UNIVERSIDAD POLITÉCNICA DE MADRID   (Spain)

^b INSTITUTO DE CIENCIA DE MATERIALES DE MADRID   (Spain)

^c INSTITUTO DE MAGNETISMO APLICADO   (Spain)

Author keywords

Coercivity; Magnetic interactions; Magnetic viscosity; Magnetization reversal; Switching field distribution

Indexed keywords

COERCIVE FORCE; DEMAGNETIZATION; IRON ALLOYS; MAGNETIC AFTER EFFECT; NEODYMIUM ALLOYS; PARTICLE SIZE ANALYSIS; REMANENCE; SILICA; SIO2 NANOPARTICLES; SOLVENTS; SWITCHING; SYNTHETIC METALS; TEXTURES; VISCOSITY;

COMPARATIVE ANALYSIS; EXPERIMENTAL ANALYSIS; INDIVIDUAL PARTICLES; IRREVERSIBLE MAGNETIZATION; ISOTHERMAL REMANENT MAGNETIZATION; MAGNETIC INTERACTIONS; PERCOLATION THRESHOLDS; SWITCHING FIELD DISTRIBUTION;

MAGNETIZATION REVERSAL;

EID: 33744796587     PISSN: 03663175     EISSN: None     Source Type: Journal    
DOI: 10.3989/cyv.2005.v44.i3.385     Document Type: Article

References (19)

1. Science and Technology of Nanostructured Magnetic Materials. G.C. Hadjipanayis and G.A. Prinz (eds.), Plenum Press, New York, 1991.
2. G.A. Prinz. "Magnetoelectronic applications," J. Magn. Magn. Mater. 200, 57-68 (1999).
3. J.M. González, A. Salcedo, F.J. Palomares, F. Cebollada, C. Prados and A. Hernando, "Crossover from local to collective magnetic relaxation modes in Co/Ni multilayers," J. Magn. Magn. Mater. 242-245, 518-520 (2002).
4. M. Alonso-Sañudo, J.J. Blackwell, K. O'Grady, J.M. González, F. Cebollada and M. P. Morales, "Magnetic behaviour and percolation in mechanically alloyed Fe-SiO2 granular solids," J. Magn. Magn. Matter. 221, 207-214 (2000).
5. P. Gaunt, "Magnetic viscosity and thermal activation energy," J. Appl. Phys. 59, 4129-4132 (1986).
6. M.P. Morales, S. Veintemillas-Verdaguer, M.I. Montero and C.J. Serna, "Surface and internal spin canting in gamma-Fe2O3 nanoparticles "Chem. Mater. 11, 3058-3064 (1999).
7. G.C. Hadjipanayis and R.W. Siegel (Eds.), Nanophase Materials: Synthesis, Properties, Applications (Kluwer Ac. Publ., Dordrecht, 1994).
8. C.L. Chien. "Granular solids," pp. 477-496 in Science and Technology of Nanostructured Magnetic Materials. G.C. Hadjipanayis and G.A. Prinz (eds.), Plenum Press, New York, 1991.
9. 2, granular solids," 33, 1709-1716 (1995).
10. 2," J. Magn. Magn. Mater. 166, 283-289 (1997).
11. I. Joffe and R. Heuberger, "Hysteresis properties of distributions of cubic single-domain ferromagnetic particles," Phil. Mag. 314, 1051-1059 (1974).
12. 2, composite thin films," IEEE Trans. on Mag. 29, 3724-3726 (1993).
13. J.M.D. Coey, Rare-Earth Iron Permanent Magnets (Clarendon Press, Oxford,1996).
14. D. Givord, Q. Lu, F.P. Missell, M.F. Rossignol, D.W. Taylor and V. Villas-Boas, "A direct study of the dipolar field in several RFeB systems," J. Magn. Magn. Mater. 104-107, 1129-1131 (1992).
15. K. Dürst and H. Kronmüller, "The coercive field of sintered and melt-spun NdFeB magnets," J. Magn. Magn. Mater. 59, 86-94 (1986).
16. J.M. González, F. Cebollada and A. Hernando, "Modelling the influence of intergranular phases on the hseresis behaviour of hard magnetic polycrystals," J. Appl. Phys. 73, 6943-6495 (1993).
17. J. Fidler, T. Schrefl, W. Scholz, D. Suess, R. Dittrich and M. Kirschner, "Micromagnetic modelling and magnetization processes," J. Magn. Magn. Mater. 272-276, 641-646 (2004).
18. M. Emura, J.M. González, and F.P. Missell, "Magnetization reversal processes linked to interphase exchange and dipolar coupling in hard-soft nanocomposite magnets," J. Appl. Phys. 81, 4983-4985 (1997).
19. E.E. Fullerton, J.S. Jiang and S.D. Bader, J. Magn. Magn. Mater. "Hard/soft magnetic heterostructures: model exchange-spring magnets," 200, 392-404 (1999).