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Volumn 16, Issue 6, 2004, Pages 529-533

From Hollow to Dense Spheres: Control of Dipolar Interactions by Tailoring the Architecture in Colloidal Aggregates of Superparamagnetic Iron Oxide Nanocrystals

Author keywords

[No Author keywords available]

Indexed keywords

AEROSOLS; AGGLOMERATION; COLLOIDS; CRYSTAL MICROSTRUCTURE; HIGH TEMPERATURE EFFECTS; HYSTERESIS; MAGNETIC FIELDS; MAGNETIZATION; SUPERPARAMAGNETISM; SYNTHESIS (CHEMICAL); X RAY DIFFRACTION;

EID: 2142827957     PISSN: 09359648     EISSN: None     Source Type: Journal    
DOI: 10.1002/adma.200305814     Document Type: Article
Times cited : (38)

References (30)
  • 20
    • 2142738114 scopus 로고    scopus 로고
    • Evidence of hollowness in the samples was corroborated by scanning electron microscopy. Using this technique we observed a similar microstructure in all samples. In the scanning mode we only observed the surface of particles, and since the resolution is much smaller than in the transmission mode, we can expect dense and hollow spheres to appear similar
    • Evidence of hollowness in the samples was corroborated by scanning electron microscopy. Using this technique we observed a similar microstructure in all samples. In the scanning mode we only observed the surface of particles, and since the resolution is much smaller than in the transmission mode, we can expect dense and hollow spheres to appear similar.
  • 27
    • 2142685023 scopus 로고    scopus 로고
    • s depends on temperature we can expect differences in the value of T* at different temperatures. This is the reason why we estimate T* at 300 K (working temperature for most of the relevant technological applications of magnetic nanoparticles)
    • s depends on temperature we can expect differences in the value of T* at different temperatures. This is the reason why we estimate T* at 300 K (working temperature for most of the relevant technological applications of magnetic nanoparticles).
  • 28
    • 2142724122 scopus 로고    scopus 로고
    • A fit with Equation 3, superimposed with a log-normal particle size distribution results in strongly correlated parameters of T* and the median panicle size. However, the agreement between the particle size estimated following this model and that estimated from X-ray diffraction seems to suggest that the fit was reliable. In any case, it is clear that the mean field model is successful in describing dipolar interactions between nanomagnets
    • A fit with Equation 3, superimposed with a log-normal particle size distribution results in strongly correlated parameters of T* and the median panicle size. However, the agreement between the particle size estimated following this model and that estimated from X-ray diffraction seems to suggest that the fit was reliable. In any case, it is clear that the mean field model is successful in describing dipolar interactions between nanomagnets.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.