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Relaxation dynamics and thermodynamic properties of glassy Tb0.5Sr0.5MnO3 single crystal
- Source :
- IndraStra Global.
- Publication Year :
- 2017
-
Abstract
- Single crystals of Tb0.5Sr0.5MnO3 were grown in an optical float zone furnace and their magnetic and thermodynamic properties were studied. Temperature dependent DC magnetization measurements at different fields show strong irreversibility below the magnetic anomaly at 44 K. The upward deviation from ideal CW behavior well above the transition temperature and its field independent nature are signatures of non-Griffiths phase. The origin non-Griffiths phase owe to competition between the antiferromagnetic and ferromagnetic Mn3+ Mn4+ interactions mediated through intervening oxygen. Further, 44 K transition is confirmed as a magnetic glassy transition. The estimated dynamical spin flip time (tau(o)=2.11(3) x10(-14) s) and zv(9.3(2)) values fall into the range of typical spin-glass systems. Detailed memory and temperature cycling relaxation measurements were performed and support the Hierarchical relmtation model. Low-temperature specific heat data displays a linear term, identifying the glassy magnetic phase contribution.
- Subjects :
- Spin glass
Condensed matter physics
Chemistry
Transition temperature
Physics
Relaxation (NMR)
02 engineering and technology
General Chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Magnetization
Ferromagnetism
Phase (matter)
0103 physical sciences
Materials Chemistry
Antiferromagnetism
010306 general physics
0210 nano-technology
Single crystal
Subjects
Details
- Language :
- English
- ISSN :
- 23813652
- Database :
- OpenAIRE
- Journal :
- IndraStra Global
- Accession number :
- edsair.doi.dedup.....1ba2ca3f75e230238f5718ba783aeec6