Relationship between blocking temperature and strength of interparticle interaction in magnetic nanoparticle systems

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作者：M.S. Seehra ; ^{mseehra@wvu.edu" class="auth_mail" title="E-mail the corresponding author} ; K.L. Pisane
关键词：Magnetic nanoparticles ; Interparticle interactions ; Blocking temperatures ; Vogel-Fulcher relation
刊名：Journal of Physics and Chemistry of Solids
出版年：2016
出版时间：June 2016
年：2016
卷：93
期：Complete
页码：79-81
全文大小：476 K

文摘

•: Changes in T_B with measuring frequency f_m determines the presence of IPI.
•: The parameter JSB inlineImage" height="20" width="74" alt="View the MathML source" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0022369716300312-si0015.gif"> $Φ = \frac{{∆ T}_{B}}{[T_{B} ∆ \log_{10} f_{m}]}$ quantifies IPI in nanoparticle systems.
•: Non-zero Vogel-Fulcher temperature T_o $T_{o}$ also signifies the presence of IPI.
•: The new relation $Φ = Φ_{o} [1 - (\frac{T_{o}}{T_{B}})]$ is derived connecting T_o $T_{o}$ and Φ $Φ$ .
•: $Φ = Φ_{o} [1 - (\frac{T_{o}}{T_{B}})]$ is verified experimentally using data from several NP systems.