Spectroscopic signature of the superparamagnetic transition and surface spin disorder in CoFe 2O 4 nanoparticles

ACS Nano

Volumn 6, Issue 6, 2012, Pages 4876-4883

  Sun, Qi C ^a   Birkel, Christina S ^b,d   Cao, Jinbo ^c   Tremel, Wolfgang ^b   Musfeldt, Janice L ^a  

^a UNIVERSITY OF TENNESSEE   (United States)

^b JOHANNES GUTENBERG UNIVERSITY   (Germany)

^c GE GLOBAL RESEARCH   (United States)

^d UNIVERSITY OF CALIFORNIA   (United States)

Author keywords

CoFe 2O 4; nanoparticles; spin phonon coupling; spinel; superparamagnetism; surface spin disorder

Indexed keywords

BULK MATERIALS; COFE 2O 4; CORE-SHELL MODEL; FINITE LENGTH; LENGTH SCALE; LOCAL LATTICE DISTORTION; MAGNETIC OXIDES; MAGNETOELASTIC INTERACTIONS; SHELL THICKNESS; SIZE RANGES; SPECTROSCOPIC RESPONSE; SPECTROSCOPIC SIGNATURES; SPIN-PHONON COUPLING; SPINEL; SUPERPARAMAGNETIC STATE; SUPERPARAMAGNETIC TRANSITION; SURFACE SPINS; UNIT CELLS; VIBRATIONAL PROPERTIES;

NANOPARTICLES; PHONONS;

SUPERPARAMAGNETISM;

COBALT; FERRIC ION; FERRIC OXIDE; METAL NANOPARTICLE;

ARTICLE; CHEMISTRY; MATERIALS TESTING; METHODOLOGY; PARTICLE SIZE; SPECTROSCOPY; SPIN LABELING; ULTRASTRUCTURE;

COBALT; FERRIC COMPOUNDS; MATERIALS TESTING; METAL NANOPARTICLES; PARTICLE SIZE; SPECTRUM ANALYSIS; SPIN LABELS;

EID: 84862867828     PISSN: 19360851     EISSN: 1936086X     Source Type: Journal    
DOI: 10.1021/nn301276q     Document Type: Article

References (61)

1. 2 Stishovite Phys. Rev. Lett. 1994, 72, 1686-1689
2. Savrasov, S. Y.; Kotliar, G. Linear Response Calculations of Lattice Dynamics in Strongly Correlated Systems Phys. Rev. Lett. 2003, 90, 056401
3. Lucovsky, G.; Martin, R. M.; Burstein, E. Localized Effective Charges in Diatomic Crystals Phys. Rev. B 1971, 4, 1367-1374
4. Musfeldt, J. L.; Kamaras, K.; Tanner, D. B. Infrared Studies of the Phase Transition in the Organic Charge-Transfer Salt N-Propylquinolinium Ditetracyanoquinodimethane Phys. Rev. B 1992, 45, 10197-10205
5. 3 Phys. Rev. Lett. 1993, 70, 1010-1013
6. Homes, C. C.; Vogt, T.; Shapiro, S. M.; Wakimoto, S.; Ramirez, A. P. Optical Response of High-Dielectric-Constant Perovskite-Related Oxide Science 2001, 293, 673-676
7. Yamamoto, T.; Uruichi, M.; Yamamoto, K.; Yakushi, K.; Kawamoto, A.; Taniguchi, H. Examination of the Charge-Sensitive Vibrational Modes in Bis(ethylenedithio)tetrathiafulvalene J. Phys. Chem. B 2005, 109, 15226-15235
8. 3 Phys. Rev. B 2008, 77, 134411
9. 4 Phys. Rev. B 2010, 82, 014304
10. 2 Studied by Raman Spectroscopy J. Appl. Phys. 1988, 64, 5876-5878
11. 3 Phys. Rev. Lett. 1993, 70, 3651-3654
12. Gasparov, L. V.; Tanner, D. B.; Romero, D. B.; Berger, H.; Margaritondo, G.; Forro, L. Infrared and Raman Studies of the Verwey Transition in Magnetite Phys. Rev. B 2000, 62, 7939-7944
13. 4 Phys. Rev. Lett. 2005, 94, 137202
14. 4 from First Principles Phys. Rev. Lett. 2006, 96, 205505
15. 4 Phys. Rev. B 2008, 77, 092412
16. Lee, S.; Pirogov, A.; Kang, M.; Jang, K.-H.; Yonemura, M.; Kamiyama, T.; Cheong, S. W.; Gozzo, F.; Shin, N.; Kimura, H. et al. Giant Magneto-Elastic Coupling in Multiferroic Hexagonal Manganites Nature 2008, 451, 805-808
17. 8 Phys. Rev. B 2009, 80, 052303
18. 4 Phys. Rev. Lett. 2010, 104, 136402
19. 3 Phys. Rev. B 2010, 82, 144309
20. Lee, J. H.; Fang, L.; Vlahos, E.; Ke, X. L.; Jung, Y. W.; Kourkoutis, L. F.; Kim, J. W.; Ryan, P. J.; Heeg, T.; Roeckerath, M. et al. A Strong Ferroelectric Ferromagnet Created by Means of Spin-Lattice Coupling Nature 2010, 466, 954-958
21. Sun, Q. C.; Baker, S. N.; Christianson, A. D.; Musfeldt, J. L. Magnetoelastic Coupling in Bulk and Nanoscale MnO Phys. Rev. B 2011, 84, 014301
22. Song, R.-Q.; Xu, A.-W.; Yu, S.-H. Layered Copper Metagermanate Nanobelts: Hydrothermal Synthesis, Structure, and Magnetic Properties J. Am. Chem. Soc. 2007, 129, 4152-4153
23. 4 Nanoparticles J. Mater. Chem. 2011, 21, 6909-6915
24. Masala, O.; Seshadri, R. Spinel Ferrite/MnO Core/Shell Nanoparticles: Chemical Synthesis of All-Oxide Exchange Biased Architectures J. Am. Chem. Soc. 2005, 127, 9354-9355
25. 4 J. Magn. Magn. Mater. 1993, 123, 93-96
26. 4 J. Magn. Magn. Mater. 2000, 215, 210-212
27. Waldron, R. D. Infrared Spectra of Ferrites Phys. Rev. 1955, 99, 1727-1735
28. 4 Solid State Commun. 1991, 79, 447-452
29. Sun, S. H.; Zeng, H. Size-Controlled Synthesis of Magnetite Nanoparticles J. Am. Chem. Soc. 2002, 124, 8204-8205
30. 4 (M = Fe, Co, Mn) Nanoparticles J. Am. Chem. Soc. 2004, 126, 273-279
31. 4 Nanocrystals J. Am. Chem. Soc. 2009, 131, 12900-12901
32. 4 Nanoparticles Appl. Phys. Lett. 2003, 83, 2862-2864
33. 4 Nanoparticles with Cubic Magnetic Anisotropy Nanotechnology 2010, 21, 315701
34. 4 Spinel Ferrite Nanocrystallites J. Phys. Chem. B 1999, 103, 6876-6880
35. Garcia-Otero, J.; Porto, M.; Rivas, J.; Bunde, A. Influence of the Cubic Anisotropy Constants on the Hysteresis Loops of Single-Domain Particles: A Monte Carlo Study J. Appl. Phys. 1999, 85, 2287-2292
36. Liu, C.; Zou, B. S.; Rondinone, A. J.; Zhang, J. Chemical Control of Superparamagnetic Properties of Magnesium and Cobalt Spinel Ferrite Nanoparticles Through Atomic Level Magnetic Couplings J. Am. Chem. Soc. 2000, 122, 6263-6267
37. 4 Spinel Ferrite Nanocrystallites Appl. Phys. Lett. 1998, 73, 3156-3158
38. Skomski, R. Nanomagnetics J. Phys.: Condens. Matter 2003, 15, R841-R896
39. Ma, J. X.; Mazumdar, D.; Kim, G.; Sato, H.; Bao, N. Z.; Gupta, A. A Robust Approach for the Growth of Epitaxial Spinel Ferrite Films J. Appl. Phys. 2010, 108, 063917
40. 3 Nanocrystals: A Tool for Targeting Cell Surface Receptors Angew. Chem., Int. Ed. 2008, 47, 4748-4752
41. 4 Colloidal Particle II J. Magn. Magn. Mater. 1995, 145, 343-348
42. Stoner, E. C.; Wohlfarth, E. P. A Mechanism of Magnetic Hysteresis in Heterogeneous Alloys Philos. Trans. R. Soc. A 1948, 240, 599-642
43. This expression could also make use of averaged values as in Sun, S. H.; Murray, C. B.; Weller, D.; Folks, L.; Moser, A. Monodisperse FePt Nanoparticles and Ferromagnetic FePt Nanocrystal Superlattices Science 2000, 287, 1989-1992
44. Gubin, S. P. Magnetic Nanoparticles; Wiley-VCH: Weinheim, 2009.
45. 4 Nanoparticles Phys. Rev. Lett. 1996, 77, 394-397
46. Luo, W. D.; Zhang, P. H.; Cohen, M. L. Splitting of the Zone-Center Phonon in MnO and NiO Solid State Commun. 2007, 142, 504-508
47. Mitsuishi, A.; Yoshinaga, H.; Fujita, S. The Far Infrared Absorption of Ferrites J. Phys. Soc. Jpn. 1958, 13, 1236-1237
48. Tung, L. D.; Kolesnichenko, V.; Caruntu, D.; Chou, N. H.; O'Connor, C. J.; Spinu, L. Magnetic Properties of Ultrafine Cobalt Ferrite Particles J. Appl. Phys. 2003, 93, 7486-7488
49. Wooten, F. Optical Properties of Solids; Academic Press: New York, 1972.
50. Fu, X. G.; An, H. Z.; Du, W. M. Temperature-Dependent Raman Scattering Studies in ZnSe Nanoparticles Mater. Lett. 2005, 59, 1484-1490
51. 2 Nanoparticles Phys. Rev. B 2009, 79, 205405
52. Sun, Q. C.; Xu, X. S.; Baker, S. N.; Christianson, A. D.; Musfeldt, J. L. Experimental Determination of Ionicity in MnO Nanoparticles Chem. Mater. 2011, 23, 2956-2960
53. Karchev, N. Towards the Theory of Ferrimagnetism J. Phys.: Condens. Matter 2008, 20, 325219
54. Mazo-Zuluaga, J.; Restrepo, J.; Munoz, F.; Mejia-Lopez, J. Surface Anisotropy, Hysteretic, and Magnetic Properties of Magnetite Nanoparticles: A Simulation Study J. Appl. Phys. 2009, 105, 123907
55. 4 Spinels Prepared by a Coprecipitation Method Solid State Sci. 2003, 5, 383-392
56. Cao, J.; Choi, J.; Musfeldt, J. L.; Lutta, S.; Whittingham, M. S. Effect of Sheet Distance on the Optical Properties of Vanadate Nanotubes Chem. Mater. 2004, 16, 731-736
57. Ito, T.; Hamaguchi, T.; Nagino, H.; Yamaguchi, T.; Kido, H.; Zavarine, I. S.; Richmond, T.; Washington, J.; Kubiak, C. P. Electron Transfer on the Infrared Vibrational Time Scale in the Mixed Valence State of 1,4-Pyrazine- and 4,4′-Bipyridine-Bridged Ruthenium Cluster Complexes J. Am. Chem. Soc. 1999, 121, 4625-4632
58. 4 Nanoparticles Nanotechnology 2010, 21, 125705
59. 4 Magnetic Fluids Studied by Mössbauer Spectrometry J. Magn. Magn. Mater. 2002, 242, 613-616
60. 4 Nanoparticles J. Phys.: Condens. Matter 2011, 23, 426004
61. 3 Microcrystals in the Infrared J. Phys. C: Solid State Phys. 1987, 20, 473-484