Abstract
A homogeneous glass with composition 0.60SiO2-0.3Na2O-0.10Fe2O3 was prepared and devitrified to produce a glass ceramic having a single crystalline phase of formula Na5Fe(SiO3)4. The dc magnetic susceptibility measurements performed on the glass and the heat-treated sample have shown that the magnetic exchange interaction is antiferromagnetic and of equal strength in both samples investigated. It was shown that M versus H data at different temperatures do not collapse to a single curve in the M versus H/T representation for both the glass and the heat-treated sample, further indicating an antiferromagnetic interaction in both materials. The M versus H data for the glass sample was fitted with Brillouin function by keeping the total number of magnetic ions constant and varying the proportion of ferrous ions until a best fit was achieved. The [Fe2+]/[Fetotal] concentration ratio obtained from the fit is in good agreement with the value obtained from X-ray photoelectron spectroscopy (XPS) performed on the glass sample.
| Original language | English |
|---|---|
| Pages (from-to) | 327-333 |
| Number of pages | 7 |
| Journal | Physica Status Solidi (A) Applied Research |
| Volume | 184 |
| Issue number | 2 |
| DOIs | |
| State | Published - 2001 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics