کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1803772 | 1024629 | 2008 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Magnetic metastability in natural hemo-ilmenite solid solution (y≈0.83) Magnetic metastability in natural hemo-ilmenite solid solution (y≈0.83)](/preview/png/1803772.png)
Natural single crystals of hemo-ilmenite with y ≈0.83 are described as solid solution. The single crystals have R3¯ structure, which is homogeneous with respect to transmission electron microscopy resolution. Inhomogeneity on a molecular level is documented by ESR spectroscopy, which reveals the generation of Ti(IV)-enriched Fe(III) clusters at T⩽20 K. The ZFC–FC magnetization curves and ac susceptibility measurements indicate inhomogeneity in the magnetic structure of the solid solution at low temperature, which is manifested by spin glass-like properties at about 40 K. These findings provide evidence that chemical heterogeneity on a molecular level and subsequent magnetic disorder enhance the dynamics of the magnetization, i.e. the magnetic metastability in natural hemo-ilmenite solid solution.
Journal: Journal of Magnetism and Magnetic Materials - Volume 320, Issue 23, December 2008, Pages 3307–3312