Home | deutsch  | Legals | Data Protection | Sitemap | KIT

Magnetic Metastability in Natural Hemo-ilmenite Solid Solution (y = 0.83)

Magnetic Metastability in Natural Hemo-ilmenite Solid Solution (y = 0.83)
chair: Gehring, A.U. /  Mastrogiacomo, G. / Fischer, H. / Weidler, P.G. /  Luster J. (2008)

place:

J. Mag. Mat., 320 (2008), 23, 3307-3312

Date: 2008

Gehring, A.U. /  Mastrogiacomo, G. / Fischer, H. / Weidler, P.G. /  Luster J. (2008): „Magnetic Metastability in Natural Hemo-ilmenite Solid Solution (y = 0.83)“. In:  J. Mag. Mat., 320 (2008), 23, 3307-3312

Abstract

Natural single crystals of hemo-ilmenite with y approximate to 0.83 are described as solid solution. The single crystals have R (3) over bar 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.


 

  Download [PDF]