Large exchange bias with remarkable thermostability in an inverted quasi core/shell CoO/γ-Fe2O3 granular system

Journal of Nanoparticle Research

Volumn 16, Issue 3, 2014, Pages

  Liu, Chao ^a   Cui, Jungang ^a   He, Xuemin ^b   Shi, Huigang ^a  

^a LANZHOU UNIVERSITY   (China)

^b NANJING UNIVERSITY   (China)

Author keywords

Blocking temperature; Core shell structure; Exchange bias; Inverted structure

Indexed keywords

COBALT COMPOUNDS; DECOMPOSITION; GRANULAR MATERIALS; HEMATITE;

ACETYLACETONATES; BLOCKING TEMPERATURE; CORE SHELL STRUCTURE; EXCHANGE BIAS; EXCHANGE BIAS EFFECTS; INVERTED STRUCTURE; LINEAR RELATION; TEMPERATURE INDEPENDENTS;

STABILITY;

INVERTED QUASI CORE SHELL COO GAMMA IRON OXIDE; IRON OXIDE; NANOPARTICLE; UNCLASSIFIED DRUG;

ACCELERATION; ANISOTROPY; ARTICLE; CHEMICAL REACTION; COOLING; EXCHANGE BIAS; FILM; HIGH TEMPERATURE; HYSTERESIS; MAGNETIC FIELD; NUCLEAR MAGNETIC RESONANCE IMAGING; OXIDATION; PRIORITY JOURNAL; TEMPERATURE DEPENDENCE; THERMOSTABILITY; TRANSMISSION ELECTRON MICROSCOPY; X RAY PHOTOELECTRON SPECTROSCOPY; X RAY POWDER DIFFRACTION;

EID: 84897028221     PISSN: 13880764     EISSN: 1572896X     Source Type: Journal    
DOI: 10.1007/s11051-014-2320-7     Document Type: Article

References (54)

1. 3 epitaxial thin films. Phys Rev Lett 100(1):017204
2. Berkowitz AE, Takano K (1999) Exchange anisotropy - a review. J Magn Magn Mater 200(1-3):552-570 (Pubitemid 32077532)
3. 4 shells: doubly inverted core-shell system. Phys Rev B 77(2):024403
4. Cabot A, Alivisatos AP, Puntes VF, Balcells L, Iglesias Ò, Labarta A (2009) Magnetic domains and surface effects in hollow maghemite nanoparticles. Phys RevB79(9):094419
5. 3 core-shell nanoparticles. Phys Rev B 86(1):014426
6. Chandra S, Khurshid H, Phan M-H, Srikanth H (2012b) Asymmetric hysteresis loops and its dependence on magnetic anisotropy in exchange biased Co/CoO core-shell nanoparticles. Appl Phys Lett 101(23):232405
7. Chen C-J, Chiang R-K, Lai H-Y, Lin C-R (2010) Characterization of monodisperse wüstite nanoparticles following partial oxidation. J Phys Chem C 114(10):4258-4263
8. De Toro JA, Andrés JP, González JA, Muñiz P, Muñoz T, Normile PS, Riveiro JM (2006) Exchange bias and nanoparticle magnetic stability in Co-CoO composites. Phys Rev B 73(9):094449
9. Del Bianco L, Fiorani D, Testa AM, Bonetti E, Signorini L (2004) Field-cooling dependence of exchange bias in a granular system of Fe nanoparticles embedded in an Fe oxide matrix. Phys Rev B 70(5):052401
10. El-Sheikh S, Rashad M, Harraz F (2013) Morphological investigation and magnetic properties of nickel zinc ferrite 1D nanostructures synthesized via thermal decomposition method. J Nanopart Res 15(10):1-11
11. Evans RFL, Bate D, Chantrell RW, Yanes R, Chubykalo-Fesenko O (2011) Influence of interfacial roughness on exchange bias in core-shell nanoparticles. Phys Rev B 84(9):092404
12. Feygenson M, Yiu Y, Kou A, Kim K-S, Aronson MC (2010) Controlling the exchange bias field in Co core/CoO shell nanoparticles. Phys Rev B 81(19):195445
13. Hai HT, Kura H, Takahashi M, Ogawa T (2011) High thermal stability of the ferrimagnetic moment in exchange biased FeO(core)/spinel(shell) nanocubes. J Phys Conf Ser 266(1):012127
14. Hai-Tao Z, Xian-Hui C (2005) Controlled synthesis and anomalous magnetic properties of relatively monodisperse CoO nanocrystals. Nanotechnology 16(10):2288
15. Hochstrat A, Binek C, Kleemann W (2002) Training of the exchange-bias effect in NiO-Fe heterostructures. Phys Rev B 66(9):092409
16. 3 nanoparticles. Phys Rev B 78(22):224408
17. Inderhees SE, Borchers JA, Green KS, Kim MS, Sun K, Strycker GL, Aronson MC (2008) Manipulating the magnetic structure of Co Core/CoO shell nanoparticles: implications for controlling the exchange bias. Phys Rev Lett 101(11):117202
18. 4 coreshell nanocrystals. Phys Rev B 78(17):174414
19. Keller J, Miltényi P, Beschoten B, Güntherodt G, Nowak U, Usadel KD (2002) Domain state model for exchange bias. II. Experiments. Phys Rev B 66(1):014431
20. 4 nano-octopods. J Appl Phys 113(17):17B508
21. Kumar P (2010) Magnetic behavior of surface nanostructured 50 nm nickel thin films. Nanoscale Res Lett 5(10):1596-1602
22. Kumar P, Ghanashyam Krishna M, Bhattacharya AK (2009) Effect of microstructural evolution on magnetic properties of Ni thin films. Bull Mater Sci 32(3):263-270
23. Laureti S, Suck SY, Haas H, Prestat E, Bourgeois O, Givord D (2012) Size dependence of exchange bias in Co/CoO nanostructures. Phys Rev Lett 108(7):077205
24. Leighton C, Nogués J, Suhl H, Schuller IK (1999) Competing interfacial exchange and Zeeman energies in exchange biased bilayers. Phys Rev B 60(18):12837-12840
25. Leighton C, Nogués J, Jönsson-Åkerman BJ, Schuller IK (2000) Coercivity enhancement in exchange biased systems driven by interfacial magnetic frustration. Phys Rev Lett 84(15):3466-3469
26. López-Ortega A, Tobia D, Winkler E, Golosovsky IV, Salazar-Alvarez G, Estradé S, Estrader M, Sort J, González MA, Suriñach S, Arbiol J, Peiró F, Zysler RD, Baró MD, Nogués J (2010) Size-dependent passivation shell and magnetic properties in antiferromagnetic/ ferrimagnetic core/shell MnO nanoparticles. J Am Chem Soc 132(27):9398-9407
27. 3 nanoparticles. Phys Rev Lett 80(1):181-184
28. Meiklejohn WH, Bean CP (1956) New magnetic anisotropy. Phys Rev 102(5):1413-1414
29. x nanoparticles by oxygen content. Nanotechnology 20(17):175702
30. Moran TJ, Schuller IK (1996) Effects of cooling field strength on exchange anisotropy at permalloy/CoO interfaces. J Appl Phys 79(8):5109-5111 (Pubitemid 126585081)
31. Nogués J, Schuller IK (1999) Exchange bias. J Magn Magn Mater 192(2):203-232
32. 2-Fe bilayers. Phys Rev Lett 76(24):4624-4627
33. Nogués J, Leighton C, Schuller IK (2000) Correlation between antiferromagnetic interface coupling and positive exchange bias. Phys Rev B 61(2):1315-1317
34. Nogués J, Sort J, Langlais V, Skumryev V, Suriñach S, Muñoz JS, Baró MD (2005) Exchange bias in nanostructures. Phys Rep 422(3):65-117
35. Ohldag H, Scholl A, Nolting F, Arenholz E, Maat S, Young AT, Carey M, Stöhr J (2003) Correlation between exchange bias and pinned interfacial spins. Phys Rev Lett 91(1):017203
36. 4 core-shell magnetic nanoparticles mediated by frozen interfacial spins. Phys Rev B 80(13):134418
37. 3 binary nanoparticles. J Phys Chem C 113(33):14609-14614
38. Peng DL, Sumiyama K, Hihara T, Yamamuro S, Konno TJ (2000) Magnetic properties of monodispersed Co/CoO clusters. Phys Rev B 61(4):3103-3109
39. 2]. Dalton Trans 39(11):2842-2854
40. Punnoose A, Seehra MS (2002) Hysteresis anomalies and exchange bias in 6.6 nm CuO nanoparticles. J Appl Phys 91(10):7766-7768
41. 4 nanoparticles. J Am Chem Soc 129(29):9102-9108
42. Simeonidis K, Martinez-Boubeta C, Iglesias O, Cabot A, Angelakeris M, Mourdikoudis S, Tsiaoussis I, Delimitis A, Dendrinou-Samara C, Kalogirou O (2011) Morphology influence on nanoscale magnetism of Co nanoparticles: experimental and theoretical aspects of exchange bias. Phys Rev B 84(14):144430
43. Skumryev V, Stoyanov S, Zhang Y, Hadjipanayis G, Givord D, Nogues J (2003) Beating the superparamagnetic limit with exchange bias. Nature 423(6942):850-853 (Pubitemid 36781272)
44. 4 nanoparticles. Nano Lett 12(1):246-251
45. Takano K, Kodama RH, Berkowitz AE, Cao W, Thomas G (1997) Interfacial uncompensated antiferromagnetic spins: role in unidirectional anisotropy in polycrystalline Ni81F19/CoO bilayers. Phys Rev Lett 79(6):1130-1133 (Pubitemid 127645528)
46. Tang YJ, Smith DJ, Zink BL, Hellman F, Berkowitz AE (2003) Finite size effects on the moment and ordering temperature in antiferromagnetic CoO layers. Phys Rev B 67(5):054408
47. 3. J Appl Phys 100(2):023914
48. Thakur M, Patra M, Majumdar S, Giri S (2009) Influence of cooling field on the magnetic properties of Ni/NiO nanostructure. J Alloys Compd 480(2):193-197
49. 4 nanoparticles embedded in an antiferromagnetic NiO matrix. Appl Phys Lett 93(22):222505
50. Tracy JB, Weiss DN, Dinega DP, Bawendi MG (2005) Exchange biasing and magnetic properties of partially and fully oxidized colloidal cobalt nanoparticles. Phys Rev B 72(6):064404
51. Vázquez-Vázquez C, López-Quintela MA, Buján-Núñez MC, Rivas J (2011) Finite size and surface effects on the magnetic properties of cobalt ferrite nanoparticles. J Nanopart Res 13(4):1663-1676
52. Zhang D, Liu Z, Han S, Li C, Lei B, Stewart MP, Tour JM, Zhou C (2004) Magnetite (Fe3O4) core-shell nanowires: synthesis and magnetoresistance. Nano Lett 4(11):2151-2155
53. 3-coated Fe nanoparticles. J Appl Phys 95(9):5244-5246
54. 3 coated Fe nanoparticles. Phys Rev B 69(21):214431