Magnetostatic interactions in a natural magnetite‐ulvöspinel system

[ 1] Magnetostatic interactions have been investigated in anintergrown material consisting of similar to 200-nm magnetite blocksseparated by similar to 30-nm-wide ulvospinel lamellae. First-orderreversal curve (FORC) measurements provide a direct measure of theinteraction fields, giving a value for the full width at half maximum

[1]  H. Wenk,et al.  Exsolved magnetite inclusions in silicates: Features determining their remanence behavior , 2005 .

[2]  C. R. Pike.  First-order reversal-curve diagrams and reversible magnetization , 2003 .

[3]  A. Muxworthy,et al.  Magnetostatic interaction fields in first-order-reversal-curve diagrams , 2005 .

[4]  B. Moskowitz.  Methods for estimating Curie temperatures of titanomaghemites from experimentalJs-T data , 1981 .

[5]  D. Heslop,et al.  Influence of magnetostatic interactions on First-order-reversal-curve (FORC) diagrams: a micromagnetic approach. , 2004 .

[6]  Wyn Williams,et al.  Three-dimensional micromagnetic calculations for magnetite using FFT , 1996 .

[7]  Andrew P. Roberts,et al.  First‐order reversal curve diagrams: A new tool for characterizing the magnetic properties of natural samples , 2000 .

[8]  Andrew P. Roberts,et al.  Characterizing interactions in fine magnetic particle systems using first order reversal curves , 1999 .

[9]  F. Preisach.  Über die magnetische Nachwirkung , 1935 .

[10]  An investigation of magnetic reversal in submicron-scale Co dots using first order reversal curve diagrams , 1999 .

[11]  Andrew P. Roberts,et al.  An investigation of multi-domain hysteresis mechanisms using FORC diagrams , 2001 .

[12]  Rafal E Dunin-Borkowski,et al.  Direct imaging of nanoscale magnetic interactions in minerals , 2002, Proceedings of the National Academy of Sciences of the United States of America.

[13]  M. Evans,et al.  An Investigation of the Role of Ultra-fine Titanomagnetite Intergrowths in Palaeomagnetism , 1974 .

[14]  D. Dunlop.  Theory and application of the Day plot (Mrs/Ms versus Hcr/Hc) 1. Theoretical curves and tests using titanomagnetite data , 2002 .

[15]  M. Fuller,et al.  Hysteresis properties of titanomagnetites: Grain-size and compositional dependence , 1977 .

[16]  K. Fabian.  Some additional parameters to estimate domain state from isothermal magnetization measurements , 2003 .