Non-equilibrium cation distribution and enhanced spin disorder in hollow CoFe2O4 nanoparticles

Journal of Physics Condensed Matter

Volumn 24, Issue 33, 2012, Pages

  Jaffari, G Hassnain ^a,b   Ceylan, A ^c   Bui, Holt P ^a   Beebe, Thomas P ^a   Ozcan, S ^c   Shah, S Ismat ^a  

^a UNIVERSITY OF DELAWARE   (United States)

^b QUAID I AZAM UNIVERSITY   (Pakistan)

^c HACETTEPE UNIVERSITY   (Turkey)

Author keywords

[No Author keywords available]

Indexed keywords

ANISOTROPY; COBALT COMPOUNDS; ELECTRONIC STRUCTURE; MORPHOLOGY; NANOMAGNETICS; NANOPARTICLES; SATURATION MAGNETIZATION; SINGLE CRYSTALS;

BULK COUNTERPART; CATION' DISTRIBUTIONS; CORE-SHELL NANOPARTICLES; ELECTRONIC.STRUCTURE; HOLLOW NANOPARTICLES; NON EQUILIBRIUM; POLYCRYSTALLINE; SOLID NANOPARTICLES; SPIN DISORDER; SPIN STRUCTURES;

IRON COMPOUNDS;

EID: 84864447608     PISSN: 09538984     EISSN: 1361648X     Source Type: Journal    
DOI: 10.1088/0953-8984/24/33/336004     Document Type: Article

References (35)

1. 4 nanoparticles J. Appl. Phys. 108 063921
2. 4 nanoparticles J. Phys. Chem. B 112 8507-13
3. 4) Phys. Rev. 107 1246-9
4. Slonczewski J C 1958 Origin of magnetic anisotropy in cobalt-substituted magnetite Phys. Rev. 110 1341-8
5. 4 by x-ray photoelectron spectroscopy Appl. Surf. Sci. 254 6972-5
6. Liu C, Zou B, Rondinone A J and Zhang Z J 2000 Chemical control of superparamagnetic properties of magnesium and cobalt spinel ferrite nanoparticles through atomic level magnetic couplings J. Am. Chem. Soc. 2000 6263-7 (Pubitemid 30456859)
7. Miyamoto S, Tanaka N and Iida S 1965 Ferromagnetic resonance in single crystals of cobalt-substituted nickel ferrite J. Phys. Soc. Japan 20 753
8. Groenou A B V, Bongers P F and Stuyts A L 1969 Magnetism, microstructure and crystal chemistry of spinel ferrites Mater. Sci. Eng. 3 317
9. Geshev J, Viegas A D C and Schmidt J E 1998 Negative remanent magnetization of fine particles with competing cubic and uniaxial anisotropies J. Appl. Phys. 84 1488-92 (Pubitemid 128588807)
10. 4 nanoparticles J. Appl. Phys. 107 013910
11. 3 nanoparticles Phys. Rev. Lett. 80 181-4 (Pubitemid 128621479)
12. 4 nanoparticles Phys. Status Solidi b 241 1589-92 (Pubitemid 39307733)
13. Ceylan A, Baker C C, Hasanain S K and Shah S I 2006 Effect of particle size on the magnetic properties of core-shell structured nanoparticles J. Appl. Phys. 100 034301
14. Coey J M D 1971 Noncollinear spin arrangement in ultrafine ferrimagnetic crystallites Phys. Rev. Lett. 27 1140
15. 4 nanoparticles Phys. Rev. Lett. 77 394-7 (Pubitemid 126624503)
16. Cabot A, Alivisatos A P, Puntes V F, Balcells L, Iglesias O and Labarta A 2009 Magnetic domains and surface effects in hollow maghemite nanoparticles Phys. Rev. B 79 094419
17. Jaffari G H, Lin H Y, Ni C and Shah S I 2009 Physiochemical phase transformations in Co/CoO nanoparticles prepared by inert gas condensation Mater. Sci. Eng. B 164 23-9
18. 4: mechanosynthesis, nonequilibrium cation distribution, canted spin arrangement, and magnetic behavior J. Phys. Chem. C 111 5026-33 (Pubitemid 46656088)
19. 4 prepared by mechanosynthesis J. Magn. Magn. Mater. 316 E764-7 (Pubitemid 46920795)
20. 4 prepared by a one-step mechanochemical route Chem. Mater. 18 3057-67 (Pubitemid 44121178)
21. Nogues J and Schuller I K 1999 Exchange bias J. Magn. Magn. Mater. 192 203-32
22. Giri S, Patra M and Majumdar S 2011 Exchange bias effect in alloys and compounds J. Phys.: Condens. Matter. 23 073201
23. Patra M, Thakur M, De K, Majumdar S and Giri S 2009 Reply to comment on particle size dependent exchange bias and cluster-glass states in LaMn(0.7)Fe(0.3)O(3) J. Phys.: Condens. Matter. 21 078002
24. 4 nanoparticles J. Magn. Magn. Mater. 313 266 (Pubitemid 46551396)
25. Geshev J 2008 J. Magn. Magn. Mater. 320 600-2 (Pubitemid 47625764)
26. Nogués J, Skumryev V, Sort J, Stoyanov S and Givord D 2006 Shell-driven magnetic stability in core-shell nanoparticles Phys. Rev. Lett. 97 157203 (Pubitemid 44570400)
27. Vazquez-Vazquez C, Lopez-Quintela M A, Bujan-Nunez M C and Rivas J 2011 Finite size and surface effects on the magnetic properties of cobalt ferrite nanoparticles J. Nanopart. Res. 13 1663-76
28. Andreev S V et al 1997 Law of approach to saturation in highly anisotropic ferromagnets. Application to Nd-Fe-B melt-spun ribbons J. Alloys Compounds 260 196-200 (Pubitemid 127391038)
29. Cullity B D 2008 Introduction to Magnetic Materials 2nd edn (New Jersey: Wiley-IEEE)
30. Zhang Y et al 2010 The temperature dependence of magnetic properties for cobalt ferrite nanoparticles by the hydrothermal method J. Appl. Phys. 108 084312
31. Pal D, Mandal M, Chaudhuri A, Das B, Sarkar D and Mandal K 2010 Micelles induced high coercivity in single domain cobalt-ferrite nanoparticles J. Appl. Phys. 108 124317
32. Jeppson P et al 2006 Cobalt ferrite nanoparticles: achieving the superparamagnetic limit by chemical reduction J. Appl. Phys. 100 114324 (Pubitemid 46012250)
33. 4 small particles J. Appl. Phys. 63 4258-60
34. Zhang Y D et al 2004 Effect of spin disorder on magnetic properties of nanostructured Ni-ferrite J. Appl. Phys. 95 7130-2
35. Chikazumi S (ed) 1997 Physics of Magnetism 2nd edn (Oxford: Oxford University Press)