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Volumn 4, Issue 12, 2008, Pages 2240-2246

Magnetic imaging of cyanide-bridged co-ordination nanoparticles grafted on FIB-patterned si substrates

Author keywords

Magnetic nanoparticles; Molecular magnets; Nanolithography; Scanning probe microscopy; Self assembled monolayers

Indexed keywords

CYANIDES; FOCUSED ION BEAMS; GRAFTING (CHEMICAL); HIGH RESOLUTION ELECTRON MICROSCOPY; MAGNETIC FIELDS; MAGNETIC MATERIALS; MAGNETISM; NANOPARTICLES; SCANNING PROBE MICROSCOPY; SELF ASSEMBLED MONOLAYERS; SILICON; SUBSTRATES;

EID: 57349181201     PISSN: 16136810     EISSN: 16136829     Source Type: Journal    
DOI: 10.1002/smll.200800897     Document Type: Article
Times cited : (14)

References (31)
  • 29
    • 57349190641 scopus 로고    scopus 로고
    • We chose the working temperature of T= 20 K because i) it is well below Tc and M the width of the scan area (7 × 7 μm2) is sufficiently large to look at the patterning. At much lower temperatures, for example 2 K, the experimental magnetic images cover areas not larger than 4.5 × 4.5 μm2. For instance, the supplementary material provides an image of an area existing within a single stripe for T= 2 K
    • 2. For instance, the supplementary material provides an image of an area existing within a single stripe for T= 2 K.
  • 30
    • 57349131173 scopus 로고    scopus 로고
    • For applied fields not exceeding 70 kOe, powder samples of the bulk equivalent material show molar magnetization values that are roughly 12% smaller than that expected for full ferromagnetic coupling of all Ni and Cr ions, 16] This discrepancy can be accounted for by a canting angle of ≈60° between the two ferromagnetic Ni and Cr sublattices. This is likely the result of an intense exchange anisotropy acting on the metal ions. Using z, 6 for the number of nearest neighbors and J/kB, 6.5 K for the Ni-Cr exchange strength,[16] a rough mean-field calculation tells us that the exchange field acting on the Ni and Cr ions amounts to Hex, 2zJ/kb S/gμB, 390 and 530 kOe for Ni and Cr, respectively
    • B = 390 and 530 kOe for Ni and Cr, respectively.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.