Magnetic properties of the magnetite-spinel solid solution; saturation magnetization and cation distributions

Abstract

Other| April 01, 1995 Magnetic properties of the magnetite-spinel solid solution: saturation magnetization and cation distributions Richard J. Harrison; Richard J. Harrison University of Cambridge, Department of Earth Sciences, Cambridge, United Kingdom Search for other works by this author on: GSW Google Scholar Andrew Putnis Andrew Putnis Search for other works by this author on: GSW Google Scholar American Mineralogist (1995) 80 (3-4): 213–221. https://doi.org/10.2138/am-1995-3-402 Article history first online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation Richard J. Harrison, Andrew Putnis; Magnetic properties of the magnetite-spinel solid solution: saturation magnetization and cation distributions. American Mineralogist 1995;; 80 (3-4): 213–221. doi: https://doi.org/10.2138/am-1995-3-402 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyAmerican Mineralogist Search Advanced Search Abstract Magnetic hysteresis properties of the Fe3O4-MgAl2O4 solid solution have been measured at 4.4 K and in fields up to 12 T. The trend in saturation magnetization, Ms (4.4 K), as a function of composition is consistent with the cation distribution model of Nell and Wood (1989) and suggests that Ms (4.4 K) changes sign at a composition of 30 mol% Fe3O4. The change in sign of Ms (4.4 K) at this composition is correlated with an anomalous peak in coercivity of over 700 mT. This effect has been explained in terms of fluctuations in both composition and the degree of nonconvergent cation order, which lead to fine-scale magnetic domains with antiferromagnetic exchange coupling. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.