Bibliographic Details
| Title: |
Spin glass state and field induced ultra-sharp magnetic transitions in Nd5Ge2Si. |
| Authors: |
Maji, Bibekananda1 (AUTHOR) bibekanandamaji@gmail.com, Modak, M.2 (AUTHOR), Mondal, S.2,3 (AUTHOR), Ray, M.K.2 (AUTHOR), Suresh, K.G.4 (AUTHOR) |
| Source: |
Physica B. Oct2019, Vol. 570, p182-186. 5p. |
| Subjects: |
Magnetic transitions, Glass fibers, Metamagnetism, Binoculars, Low temperatures, Debye temperatures |
| Abstract: |
We have observed a sharp anomaly near 40 K in the zero field cooled (ZFC) dc magnetization data along with a very large thermomagnetic irreversibility (TMI) in Nd 5 Ge 2 Si. The ac susceptibility data shows a frequency dependent cusp near the same temperature and dynamic scaling behavior in this compound. We also report the observation of multiple field induced irreversible ultra-sharp metamagnetic jumps in the magnetization isotherms at low temperatures, associated to the field induced antiferromagnetic (AFM) to ferromagnetic (FM) transition. These metamagnetic transitions persist up to near 40 K but lose the sharpness with temperature. The temperature variation of △ S M curve has a positive to negative crossover near 35 K along with a positive peak near 32 K and negative peaks near 49 and 60 K respectively. These features indicate the presence of spin glass state below the characteristic freezing temperature T SG ≈ 40 K. [ABSTRACT FROM AUTHOR] |
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| Database: |
Engineering Source |
