| Zugriffsnummer | 10644 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Order and magnetic properties of Fe89-xMn11Alx alloys: magnetization measurements and X-ray diffraction |
| Autor(in); Institution |
Bremers, H.; TU Braunschweig, Institut für Metallphysik und Nukleare Festkörperphysik, Braunschweig, GERMANY
Hesse, J.; TU Braunschweig, Institut für Metallphysik und Nukleare Festkörperphysik, Braunschweig, GERMANY
Ahlers, Heiko; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
Sievert, Johannes; PTB-Braunschweig, retired staff
Zachmann, D.; TU Braunschweig, Institut für Umweltgeologie, Braunschweig, GERMANY
|
| Quelle/Jahr | Journal of Alloys and Compounds: 366 (2004), 1-2, 67 - 75 |
| ISSN | 0925-8388 |
| Verlag | Lausanne: Elsevier |
| Freie Schlagworte | Magnetically ordered materials (A) ; Spin glasses (A) ; X-ray diffraction (C) ; Magnetic measurements (E) |
| Zusammenfassung | We report experiments performed on a series of fourteen Fe89-xMn11Alx alloys in the concentration range 2 at.% < x < 40 at.% examining structure, degree of long range order and the magnetic properties. We found the type of long range order is concentration dependent, changing from A2, crossing a DO3 region up to B2. The structural order found in this system is of great influence on the magnetic moments of the Fe atoms. Therefore the wide concentration range of the alloys investigated allowed us to observe the change from ferromagnetism via a region of re-entrance from ferromagnetism to spin glass till antiferromagnetism. In the re-entrant concentration range, we derive the magnetic field dependence on characteristic temperatures for the alloys Fe62Mn11Al27 and Fe59Mn11Al30 and demonstrate that the latter is very near the critical concentration where the Curie temperature and the freezing temperature of the re-entrant spin glass become equal. |
