Abstract
In magnetic nanoparticle systems, the variation of the blocking temperature TB with the measuring frequency fm is often used to determine the strength of the interparticle interactions (IPI) through a parameter Φ or the Vogel-Fulcher temperature To. Presence of IPI is inferred if To>0 and Φ=∆TB[TB∆log10fm]<0.13 where Δ signifies changes in TB and fm. Here it is shown that these two parameters are related by the Eq. Φ=Φo[1−(ToTB(1))] where Φo≈0.11–0.15 is a constant of the system depending on the magnitudes of measuring frequency and the attempt frequency fo of the Néel relaxation. Using data on a variety of nanoparticle systems, experimental verification of this relationship is also presented.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
