Spin Reorientation Studies in Nd2Fe14-xSixB (0<x<=2) |
| R. Gargula, A.T. Pêdziwiatr, B.F. Bogacz, S. Wróbel Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Cracow, Poland |
| J. Bartolome and J. Stankiewicz Faculty of Science, University of Zaragoza - CSIC, 50009 Zaragoza, Spain |
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| Received: November 2, 2001 |
| Nd2Fe14-xSixB (x=0.25, 0.5, 0.75, 1.0, 1.5, 2.0) intermetallic compounds were investigated by magnetometry, 57Fe Mössbauer effect, electric resistivity, and differential scanning calorimetry mainly in the vicinity of the spin reorientation temperature, TSR. The Curie temperature, TC, and TSR were determined for different compositions and the spin phase diagram was constructed. 57Fe Mössbauer spectra showed noticeable changes in the reorientation region. For temperatures above the transition, the spectra were analysed using 6 Zeeman patterns associated with 6 inequivalent crystal sites in Nd2Fe14B according to site occupations (16k1:16k2:8j1:8j2:4c:4e). In the transition region, 12 subspectra had to be incorporated in the analysis. Electric resistivity measurements showed a typical metallic behaviour with no anomalies in the magnetic transition region. Differential scanning calorimetry measurements revealed broad endothermic two stage peaks around TSR. |
| DOI: 10.12693/APhysPolA.101.289 PACS numbers: 75.50.Ww, 76.80.+y, 64.60.-i |