Influence of Co on the magnetism of HoFe5Al7
Result description
Effects of the Co substitution for Fe on the ferrimagnet HoFe5Al7 are studied on single crystals. For HoFe5-xCoxAl7, we found the homogeneity range up to x=2.5. The Co substitution results in a small shrinkage of the tetragonal lattice within the basal plane, whereas the c parameter does not change. The detrimental effect of Co on the Curie temperature is very unusual. It falls linearly from 216 K for x=0 to 67 K for x = 2.5, which is unexpected because the Co substitution for Fe in 3d-4f intermetallic compounds usually increases the ordering temperatures. The compensation temperature changes very little between 65 K and 72 K. The compounds exhibit a high magnetic anisotropy of the easy-plane type with the easy axis [110]. Along the easy axis, two first-order field-induced magnetic transitions (at 17 T and 37 T) are observed for x=0 and one transition at 27 T for x=1. The magnetization curve has an S-shape for x=2.n
Keywords
ferrimagnetismexchange interactionsmagnetic anisotropyfield-induced transition
The result's identifiers
Result code in IS VaVaI
Result on the web
DOI - Digital Object Identifier
Alternative languages
Result language
angličtina
Original language name
Influence of Co on the magnetism of HoFe5Al7
Original language description
Effects of the Co substitution for Fe on the ferrimagnet HoFe5Al7 are studied on single crystals. For HoFe5-xCoxAl7, we found the homogeneity range up to x=2.5. The Co substitution results in a small shrinkage of the tetragonal lattice within the basal plane, whereas the c parameter does not change. The detrimental effect of Co on the Curie temperature is very unusual. It falls linearly from 216 K for x=0 to 67 K for x = 2.5, which is unexpected because the Co substitution for Fe in 3d-4f intermetallic compounds usually increases the ordering temperatures. The compensation temperature changes very little between 65 K and 72 K. The compounds exhibit a high magnetic anisotropy of the easy-plane type with the easy axis [110]. Along the easy axis, two first-order field-induced magnetic transitions (at 17 T and 37 T) are observed for x=0 and one transition at 27 T for x=1. The magnetization curve has an S-shape for x=2.n
Czech name
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Czech description
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Classification
Type
Jimp - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Alloys and Compounds
ISSN
0925-8388
e-ISSN
—
Volume of the periodical
731
Issue of the periodical within the volume
Jan
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
8
Pages from-to
135-142
UT code for WoS article
000415930900020
EID of the result in the Scopus database
2-s2.0-85031115294
Result type
Jimp - Article in a specialist periodical, which is included in the Web of Science database
OECD FORD
Condensed matter physics (including formerly solid state physics, supercond.)
Year of implementation
2018