Surface anisotropy change of CoFe2O4 nanoparticles depending on thickness of coated SiO2 shell
Source abstract
Abstract
We systematically investigated the effective surface anisotropy of CoFe2O4 nanoparticles dependant on the thickness of SiO2 shell. XRD (X-ray powder diffraction) patterns and TEM (transmission electron microscopy) micrographs were used to investigate the structure of particles and thickness of SiO2 shell, respectively. The thicknesses of SiO2 shell with 5.41 nm on CoFe2O4 nanoparticles were increased up to 14.04 ± 0.05 nm by changing the amount of added TEOS by, 0.10, 0.25, 0.50, 1.00, 1.50, and 2.50 mL. The increase of the SiO2 thickness shell decreased the effective anisotropy due to decline the effectiveness of the dipolar magnetostatic interactions, determined from Vogel–Fulcher equation, between the particles. The declines in the Keff values stabled at around 3.76 ± 0.11 × 105 J/m3 for TEOS amount higher than 1.5 mL.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnetic Properties and Synthesis of Ferrites · Magnetic properties of thin films · Electromagnetic wave absorption materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (62)
Show source-provided references
1. Ahn Y, Jung Choi E, Kim S, Ok HN (2001) Magnetization and Mössbauer study of cobalt ferrite particles from nanophase cobalt iron carbonate. Mater Lett 50:47–5210.1016/S0167-577X(00)00412-2 ↗
2. Aslam M, Fu L, Li S, Dravid VP (2005) Silica encapsulation and magnetic properties of FePt nanoparticles. J Coll Inter Sci 290:444–44910.1016/j.jcis.2005.04.050 ↗
3. Bae CJ, Hwang Y, Park J, An K, Lee Y, Lee J, Hyeon T, Park JG (2007) Inter-particle and interfacial interaction of magnetic nanoparticles. J Magn Magn Mater 310:E806–E80810.1016/j.jmmm.2006.10.746 ↗
4. Bakuzis AF, Morais PC, Pelegrini F (1999) Surface and exchange anisotropy fields in MnFe2O4 nanoparticles: size and temperature effects. J Appl Phys 85:7480–748210.1063/1.369383 ↗
5. Bansmann J, Baker SH, Binns C, Blackman JA, Bucherd J-P, Dorantes-Davila J, Dupuis V, Favre L, Kechrakos D, Kleibert A, Meiwes-Broer K-H, Pastore GM, Perez A, Toulemonde O, Trohidou KN, Tuaillon J, Xie Y (2005) Magnetic and structural properties of isolated and assembled clusters. Surf Sci Report 56:189–27510.1016/j.surfrep.2004.10.001 ↗
6. Ben Tahar L, Smiri LS, Artus M, Joudrier A-L, Herbst F, Vaulay MJ, Ammar S, Fievet F (2007) Characterization and magnetic properties of Sm- and Gd-substituted CoFe2O4 nanoparticles prepared by forced hydrolysis in polyol. Mater Res Bull 42:1888–189610.1016/j.materresbull.2006.12.014 ↗
7. Bessais L, Ben Jaffel L, Dormann JL (1992) Relaxation time of fine magnetic particles in uniaxial symmetry. Phys Rev B 45:7805–781510.1103/PhysRevB.45.7805 ↗
8. Brown WF (1959) Relaxation behavior of fine magetic particles. J Appl Phys 30(4):130–13210.1063/1.2185851 ↗
9. Caizer C, Stefanescu M (2002) Magnetic characterization of nanocrystalline Ni–Zn ferrite powder prepared by the glyoxylate precursor method. J Appl Phys D 35:3035–304010.1088/0022-3727/35/23/301 ↗
10. Cannas C, Musinu A, Ardu A, Orru F, Peddis D, Casu M, Sanna R, Angius F, Diaz G, Piccaluga G (2010) CoFe2O4 and CoFe2O4/SiO2 Core/Shell nanoparticles: magnetic and spectroscopic study. Chem Mater 22:3353–336110.1021/cm903837g ↗
11. Caruntu D, Remond Y, Chou NH, Jun MJ, Caruntu G, He JB, Goloverda G, O’Connor CJ, Kolesnichenko VL (2002) Reactivity of 3d transition metal cations in diethylene glycol solutions. Synthesis of transition metal ferrites with the structure of discrete nanoparticles complexed with long-chain carboxylate anions. Inorganic Chem 41:6137–614610.1021/ic025664j ↗
12. Caruntu D, Caruntu G, Chen Y, O’Connor CJ, Goloverda G, Kolesnichenko VL (2004) Synthesis of variable-sized nanocrystals of Fe3O4 with high surface reactivity. Chem Mater 16:5527–553410.1021/cm0487977 ↗
13. Caruntu D, Caruntu G, O’Connor CJ (2007) Magnetic properties of variable-sized Fe3O4 nanoparticles synthesized from non-aqueous homogeneous solutions of polyols. J Phys D 40:5801–580910.1088/0022-3727/40/19/001 ↗
14. Casu A, Casula MF, Corrias A, Falqui A, Loche D, Marras S (2007) Magnetic and structural investigation of highly porous CoFe2O4-SiO2 nanocomposite aerogels. J Phys Chem C 111:916–92210.1021/jp0650230 ↗
15. Chen Z-G, Tang D-Y (2007) Size-dependent magnetic properties of MnFe2O4 fine particles synthesized by coprecipitation. Bioprocess Biosyst Eng 30:243–24910.1007/s00449-007-0120-5 ↗
16. Chen Y, Snyder JE, Schwichtenberg CR, Dennis KW, McCallum RW, Jiles DC (1999) Metal-bonded Co-ferrite composites for magnetostrictive torque sensor applications. IEEE Tran Magn 35(5):3652–365410.1109/20.800620 ↗
17. Chen JS, Chen C, Liu J, Xu R, Qiao SZ, Lou XW (2011) Ellipsoidal hollow nanostructures assembled from anatase TiO2 nanosheets as a magnetically separable photocatalyst. Chem Commun 47:2631–263310.1039/c0cc04471g ↗
18. Coşkun M, Korkmaz M, Fırat T, Jaffari GH, Shah SI (2010) Synthesis of SiO2 coated NiFe2O4 nanoparticles and the effect of SiO2 shell thickness on the magnetic properties. J Appl Phys 107:09B52310.1063/1.3359426 ↗
19. Davies KJ, Wells S, Upadhyay RV, Charles SW, O’Grady K, El Hilo M, Meazi T, Mørup S (1995) The observation of multi-axial anisotropy in ultrafine cobalt ferrite particles used in magnetic fluids. J Magn Magn Mater 149(1–2):14–1810.1016/0304-8853(95)00319-3 ↗
20. de la Presa P, Multigner M, Morales MP, Rueda T, Fernandez-Pinel E, Hernando A (2007) Synthesis and characterization of FePt/Au core–shell nanoparticles. J Magn Magn Mater 316(2):E753–E75510.1016/j.jmmm.2007.03.084 ↗
21. Demirel B, Yenigün O, Bekbölet M (1999) Removal of Cu, Ni and Zn from waste waters by the ferrite process. Environ Tech 20(9):963–97010.1080/09593332008616891 ↗
22. Didukh P, Greneche JM, Slawska-Waniewska A, Fannin PC, Casas L (2002) Surface effects in CoFe2O4 magnetic fluids studied by Mössbauer spectrometry. J Magn Magn Mater 242–245:613–61610.1016/S0304-8853(01)01044-7 ↗
23. Djurberg C, Svedlindh P, Nordblad P, Hansen MF, Bødker F, Mørup S (1997) Dynamics of an interacting particle system: evidence of critical slowing down. Phys Rev Lett 79(25):5154–515710.1103/PhysRevLett.79.5154 ↗
24. Fujiwara A, Tada M, Nakagawa T, Abe M (2008) Permeability and electric resistivity of spin-sprayed Zn ferrite films for high-frequency device applications. J Magn Magn Mater 320(8):L67–L6910.1016/j.jmmm.2007.11.026 ↗
25. Garcia-Otero J, Porto M, Rivas J, Bunde A (2000) Influence of dipolar interaction on magnetic properties of ultrafine ferromagnetic particles. Phys Rev Lett 84:167–17010.1103/PhysRevLett.84.167 ↗
26. Gilmore K, Idzerda YU, Klem MT, Allen M, Douglas T, Young M (2005) Surface contribution to the anisotropy energy of spherical magnetite particles. J Appl Phys 97:10B30110.1063/1.1845973 ↗
27. Giri J, Pradhan P, Somani V, Chelawat H, Chhatre S, Banerjee R, Bahadur D (2008) Synthesis and characterizations of water-based ferrofluids of substituted ferrites [Fe1-x B x Fe2O4, B = Mn, Co (x = 0–1)] for biomedical applications. J Magn Magn Mater 320(5):724–73010.1016/j.jmmm.2007.08.010 ↗
28. Hadjipanayis GC (1999) Nanophase hard magnets. J Magn Magn Mater 200:373–39110.1016/S0304-8853(99)00430-8 ↗
29. Harasawa T, Suzuki R, Shimizu O, Ölçer S, Eleftheriou E (2010) Barium-ferrite particulate media for high-recording-density tape storage systems. IEEE Tran Magn 46(6):1894–189710.1109/TMAG.2010.2042286 ↗
30. He YP, Wang SQ, Li CR, Miao YM, Wu ZY, Zou BS (2005) Synthesis and characterization of functionalized silica-coated Fe3O4 superparamagnetic nanocrystals for biological applications. J Phys D Appl Phys 38:1342–135010.1088/0022-3727/38/9/003 ↗
31. Hencl V, Mucha P, Orlikova A, Leskova D (1995) Utilization of ferrites for water treatment. Water Res 29(1):383–38510.1016/0043-1354(94)E0112-J ↗
32. Huber DL (2005) Synthesis, properties, and applications of iron nanoparticles. Small 1(5):482–50110.1002/smll.200500006 ↗
33. Jinxing P, Yun G, Yan X, Chaocan Z (2005) Preparation of SiO2 nanoparticles by silicon and their dispersion stability. J Wuhan Univ Technol: Mater Sci Edit 20:74–7610.1007/BF02838494 ↗
34. Kant KM, Sethupathi K, Rao MSR (2008) Tuning the magnetization dynamics of silica-coated Fe3O4 core-shell nanoparticles by shell thickness control. J Appl Phys 103:07D50110.1063/1.2828574 ↗
35. Kim DK, Zhang Y, Voit W, Rao KV, Muhammed M (2001) Synthesis and characterization of surfactant-coated superparamagnetic monodispersed iron oxide nanoparticles. J Magn Magn Mater 225:30–3610.1016/S0304-8853(00)01224-5 ↗
36. Kodama RH, Berkowitz AE, McNiff EJ, Foner S (1997) Surface spin disorder in ferrite nanoparticles. J Appl Phys 81(8):5552–555710.1063/1.364659 ↗
37. Latorre-Esteves M, Cortés A, Torres-Lugo M, Rinaldi C (2009) Synthesis and characterization of carboxymethyl dextran-coated Mn/Zn ferrite for biomedical applications. J Magn Magn Mater 321(19):3061–306610.1016/j.jmmm.2009.05.023 ↗
38. Lee DC, Mikulec FV, Pelaez JM, Koo B, Korgel BA (2006) Synthesis and magnetic properties of silica-coated FePt nanocrystals. J Phys Chem B 110:11160–1116610.1021/jp060974z ↗
39. Limaye MV, Singh SB, Date SK, Kothari D, Reddy VR, Gupta A, Sathe V, Choudhary RJ, Kulkarni SK (2009) High coercivity of oleic acid capped CoFe2O4 nanoparticles at room temperature. J Phys Chem B 113:9070–907610.1021/jp810975v ↗
40. Lizuka T, Lida S (1996) The magnetic anisotropy induced by electron diffusion in Co1+2x Fe2−2x O4 and Fe1−2x Ni2x Co2O4. J Phys Soc Jpn 21:222–231
41. López JL, Pfannes HD, Paniago R, Sinnecker JP, Novak MA (2008) Investigation of the static and dynamic magnetic properties of CoFe2O4 nanoparticles. J Magn Magn Mater 320:E327–E33010.1016/j.jmmm.2008.02.065 ↗
42. Ma DL, Veres T, Clim L, Normandin F, Guan JW, Kingston D, Simard B (2007) Superparamagnetic Fe(x)O y @SiO2 core-shell nanostructures: controlled synthesis and magnetic characterization. J Phys Chem C 111:1999–200710.1021/jp0665067 ↗
43. Maaz K, Karim S, Mumtaz A, Hasanain SK, Liu J, Duan JL (2009) Synthesis and magnetic characterization of nickel ferrite nanoparticles prepared by co-precipitation route. J Magn Magn Mater 321:1838–184210.1016/j.jmmm.2008.11.098 ↗
44. Matsumoto M, Morisako A, Takei S (2001) Characteristics of Ba–ferrite thin films for magnetic disk media application. J Alloy Comp 326(1–2):215–22010.1016/S0925-8388(01)01280-4 ↗
45. Morel AL, Nikitenko SI, Gionnet K, Wattiaux A, Lai-Kee-Him J, Labrugere C, Chevalier B, Deleris G, Petibois C, Brisson A, Simonoff M (2008) Sonochemical approach to the synthesis of Fe3O4@SiO2 core–shell nanoparticles with tunable properties. ACS Nano 2:847–85610.1021/nn800091q ↗
46. Mukadam MD, Yusuf SM, Sharma P, Kulshreshtha SK, Dey GK (2005) Dynamics of spin clusters in amorphous Fe2O3. Phys Rev B 72:17440810.1103/PhysRevB.72.174408 ↗
47. Naughton BT, Majewski P, Clarke DR (2007) Magnetic properties of nickel–zinc ferrite toroids prepared from nanoparticles. J Amer Ceram Soc 90:3547–355310.1111/j.1551-2916.2007.01981.x ↗
48. Papaefthymiou GC, Devlin E, Simopoulos A, Yi DK, Riduan SN, Lee SS, Ying JY (2009) Interparticle interactions in magnetic core/shell nanoarchitectures. Phys Rev B 80:02440610.1103/PhysRevB.80.024406 ↗
49. Pardavi-Horvath M (2000) Microwave applications of soft ferrites. J Magn Magn Mater 215–216:171–18310.1016/S0304-8853(00)00106-2 ↗
50. Shenker H (1957) Magnetic anisotropy of cobalt ferrite (Co1.01Fe2.00O3.62) and nickel cobalt ferrite (Ni0.72Fe0.20Co0.08Fe2O4). Phys Rev B 107:124610.1103/PhysRev.107.1246 ↗
51. Singh V, Seehra MS, Bonevich J (2009) Ac susceptibility studies of magnetic relaxation in nanoparticles of Ni dispersed in silica. J Appl Phys 105:07B51810.1063/1.3073949 ↗
52. Tago T, Hatsuta T, Miyajima K, Kishida M, Tashiro S, Wakabayashi K (2002) Novel synthesis of silica-coated ferrite nanoparticles prepared using water-in-oil microemulsion. J Amer Ceram Soc 85(9):2188–219410.1111/j.1151-2916.2002.tb00433.x ↗
53. Taketomi S (1998) Spin-glass-like complex susceptibility of frozen magnetic fluids. Phys Rev E 57:307310.1103/PhysRevE.57.3073 ↗
54. Tang D, Yuan R, Chai Y, An H (2007) Magnetic-core/porous-shell CoFe2O4/SiO2 composite nanoparticles as immobilized affinity supports for clinical immunoassays. Adv Funct Mater 17:976–98210.1002/adfm.200600462 ↗
55. Thapa D, Palkar VR, Kurup MB, Malik SK (2004) Properties of magnetite nanoparticles synthesized through a novel chemical route. Mater Lett 58(21):2692–269410.1016/j.matlet.2004.03.045 ↗
56. Trohidou KN (2005) In: Fiorani D (ed) Surface effects in magnetic nanoparticles. Springer, New York, p 46
57. Tung LD, Kolesnichenko V, Caruntu D, Chou NH, O’connor CJ, Spinu L (2003) Magnetic properties of ultrafine cobalt ferrite particles. J Appl Phys 93:7486–748810.1063/1.1540145 ↗
58. Vogt C, Toprak MS, Muhammed M, Laurent S, Bridot J-L, Muller RN (2010) High quality and tuneable silica shell–magnetic core nanoparticles. J Nanopart Res 12:1137–114710.1007/s11051-009-9661-7 ↗
59. Wu M, Ma YQ, Liu Y, Bi H, Fang Q, Niu H, Chen Q (2008) Chainlike assembly of magnetite coated with SiO2 nanostructures induced by an applied magnetic field. Mater Res Bull 43(5):1321–132610.1016/j.materresbull.2007.06.009 ↗
60. Yang HT, Hasegawa D, Takahashi M, Ogawa T (2009) Achieving a noninteracting magnetic nanoparticle system through direct control of interparticle spacing. Appl Phys Lett 94:01310310.1063/1.3063032 ↗
61. Yi DK, Lee SS, Papaefthymiou GC, Ying JY (2006) Nanoparticle architectures templated by SiO2/Fe2O3 nanocomposites. Chem Mater 18:614–61910.1021/cm0512979 ↗
62. Zhoua WL, Carpenter EE, Lin J, Kumbhar A, Sims J, O’Connor CJ (2001) Nanostructures of gold coated iron core–shell nanoparticles and the nanobands assembled under magnetic field. Eur Phys J D 16:289–29210.1007/s100530170112 ↗