Abstract
The crystal structure and the magnetic properties of the W1-xNbxO3-δ, (x<0.03) system have been investigated. In contrast to the orthorhombic diamagnetic WO3, the material with x=0.01 is paramagnetic down to 5K. Introducing 2.5 at% of Nb into WO3 leads to a tetragonal structure and to a weak itinerant ferromagnetic ordering below TC=225K. The saturation magnetic moment at 5K is 1.07×10-3μ(B), whereas the paramagnetic effective moment is 0.06μB/mol. This high ratio indicates itinerant ferromagnetism in W0.975Nb0.025O3-δ.
Original language | English |
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Pages (from-to) | 191-194 |
Number of pages | 4 |
Journal | Physica B: Condensed Matter |
Volume | 311 |
Issue number | 3-4 |
DOIs | |
State | Published - Feb 2002 |
Keywords
- Crystal structure
- Itinerant magnetism