Large adiabatic temperature change and magnetic frustration in triangular lattice antiferromagnet Dy2IrSi3
Journal Article
·
· Journal of Alloys and Compounds
- Saha Institute of Nuclear Physics, Kolkata (India)
- Ames Laboratory, and Iowa State University, Ames, IA (United States)
- Tata Institute of Fundamental Research, Bombay (India)
While previous studies reveal that the formation of polycrystalline R2TX3 (R = rare-earth, T = transition metal, X = p-block element) type compounds with T = Ir and Co is not achievable without deliberate introduction of atomic vacancies of Ir/Co and Si, here we report successful synthesis of Dy2IrSi3 with fully stoichiometric ratio of constituent elements. An antiferromagnetic transition is manifested in the compound at 6.6 K where only about 50 % of Dy spins take part, while the rest remain in highly frustrated state due to edge-sharing triangular lattice geometry. The magnetic frustration is conclusively probed through magnetization, heat capacity and magnetocaloric study and the frustration parameter (f = |θp|/TN, θp, TN being Curie-Weiss and Néel temperatures, respectively) in this case is as large as ~ 3. An additional cluster-glass type transition at ~2.8 K observed in this system has likely been originated due to this magnetic frustration. The magnetocaloric effect reveals an adiabatic temperature change of ~7.5 K for 70 kOe magnetic field, which is one of the largest values reported in intermetallic compounds.
- Research Organization:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-07CH11358
- OSTI ID:
- 2299900
- Alternate ID(s):
- OSTI ID: 2369842
- Report Number(s):
- IS-J--11,262
- Journal Information:
- Journal of Alloys and Compounds, Journal Name: Journal of Alloys and Compounds Vol. 981; ISSN 0925-8388
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Calibration of ac and dc magnetometers with a Dy{sub 2}O{sub 3} standard
Spin glass behavior in the Dy{sub 3-x}Y{sub x}TaO{sub 7} (0≤x≤1) system
Journal Article
·
Fri Apr 15 00:00:00 EDT 2011
· Review of Scientific Instruments
·
OSTI ID:22062307
Spin glass behavior in the Dy{sub 3-x}Y{sub x}TaO{sub 7} (0≤x≤1) system
Journal Article
·
Mon Sep 15 00:00:00 EDT 2014
· Journal of Solid State Chemistry
·
OSTI ID:22443383