On the edge of periodicity: Unconventional magnetism of Gd117Co56.4Sn114.3
Abstract
Magnetization measurements reveal the onset of magnetic ordering at TC = 65 K followed by three additional magnetic anomalies at T1 = 47 K, T2 = 28 K, and T3 = 11 K in Gd117Co56.4Sn114.3 – a compound with a giant cubic unit cell that crystallizes in the Dy117Co56Sn112 structure type with space group Fm3¯m and lattice parameter a = 30.186 Å. The magnetic ordering temperature increases with applied magnetic field; however, the analysis of magnetic data indicates that antiferromagnetic interactions also play a role in the ground state. AC magnetic susceptibility confirms multiple magnetic anomalies and shows minor frequency dependence. The local magnetic ordering below 60 K is supported by the Mössbauer spectroscopy. A single broad anomaly is detected at T3 in the heat capacity; we suggest that magnetic domains form below this temperature. Furthermore, these data highlight unique features of magnetism in this and, potentially, other rare-earth intermetallics crystallizing with giant unit-cells where the exchange correlation lengths are much shorter when compared to the periodicity of the crystal lattice.
- Authors:
-
- Ames Lab. and Iowa State Univ., Ames, IA (United States); Seagate Technology, Bloomington, MN (United States)
- Ames Lab. and Iowa State Univ., Ames, IA (United States)
- McGill Univ., Montreal, QC (Canada)
- Publication Date:
- Research Org.:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1374753
- Alternate Identifier(s):
- OSTI ID: 1549728
- Report Number(s):
- IS-J-9410
Journal ID: ISSN 0925-8388; PII: S0925838817327378
- Grant/Contract Number:
- AC02-07CH11358
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Alloys and Compounds
- Additional Journal Information:
- Journal Volume: 726; Journal Issue: C; Journal ID: ISSN 0925-8388
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; rare earth alloys and compounds; magnetization; magnetic frustration; heat capacity; Mössbauer
Citation Formats
Liu, J., Mudryk, Yaroslav, Ryan, D. H., and Pecharsky, Vitalij K. On the edge of periodicity: Unconventional magnetism of Gd117Co56.4Sn114.3. United States: N. p., 2017.
Web. doi:10.1016/j.jallcom.2017.08.009.
Liu, J., Mudryk, Yaroslav, Ryan, D. H., & Pecharsky, Vitalij K. On the edge of periodicity: Unconventional magnetism of Gd117Co56.4Sn114.3. United States. https://doi.org/10.1016/j.jallcom.2017.08.009
Liu, J., Mudryk, Yaroslav, Ryan, D. H., and Pecharsky, Vitalij K. Fri .
"On the edge of periodicity: Unconventional magnetism of Gd117Co56.4Sn114.3". United States. https://doi.org/10.1016/j.jallcom.2017.08.009. https://www.osti.gov/servlets/purl/1374753.
@article{osti_1374753,
title = {On the edge of periodicity: Unconventional magnetism of Gd117Co56.4Sn114.3},
author = {Liu, J. and Mudryk, Yaroslav and Ryan, D. H. and Pecharsky, Vitalij K.},
abstractNote = {Magnetization measurements reveal the onset of magnetic ordering at TC = 65 K followed by three additional magnetic anomalies at T1 = 47 K, T2 = 28 K, and T3 = 11 K in Gd117Co56.4Sn114.3 – a compound with a giant cubic unit cell that crystallizes in the Dy117Co56Sn112 structure type with space group Fm3¯m and lattice parameter a = 30.186 Å. The magnetic ordering temperature increases with applied magnetic field; however, the analysis of magnetic data indicates that antiferromagnetic interactions also play a role in the ground state. AC magnetic susceptibility confirms multiple magnetic anomalies and shows minor frequency dependence. The local magnetic ordering below 60 K is supported by the Mössbauer spectroscopy. A single broad anomaly is detected at T3 in the heat capacity; we suggest that magnetic domains form below this temperature. Furthermore, these data highlight unique features of magnetism in this and, potentially, other rare-earth intermetallics crystallizing with giant unit-cells where the exchange correlation lengths are much shorter when compared to the periodicity of the crystal lattice.},
doi = {10.1016/j.jallcom.2017.08.009},
journal = {Journal of Alloys and Compounds},
number = C,
volume = 726,
place = {United States},
year = {Fri Aug 04 00:00:00 EDT 2017},
month = {Fri Aug 04 00:00:00 EDT 2017}
}
Web of Science
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