Magnetic properties of DyFe5-xCoxAl7: Suppression of exchange interactions and magnetocrystalline anisotropy by Co substitution

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10374651" target="_blank" >RIV/00216208:11320/18:10374651 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/18:00501203
Result on the web
<a href="https://doi.org/10.1016/j.jallcom.2018.01.126" target="_blank" >https://doi.org/10.1016/j.jallcom.2018.01.126</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jallcom.2018.01.126" target="_blank" >10.1016/j.jallcom.2018.01.126</a>

Result language
angličtina
Original language name
Magnetic properties of DyFe5-xCoxAl7: Suppression of exchange interactions and magnetocrystalline anisotropy by Co substitution
Original language description
In 3d - 4f intermetallic compounds, a Co substitution for Fe usually strengthens the exchange interactions due to a shift of the Fermi energy to a region of the 3d band with higher density of states. Here, we study the influence of Co on the magnetism of ferrimagnetic DyFe5Al7 using magnetization measurements in static (up to 14 T) and pulsed (up to 58 T) magnetic fields. We find that the homogeneity range of DyFe5-xCoxAl7 is limited to x <= 2.5. The Co substitution for Fe produces a strong detrimental effect on the 3d - 3d intrasublattice exchange interactions, which leads to a pronounced decrease of the Curie temperature and of the 3d - 4f intersublattice exchange field. A reduction of the density of states at the Fermi level might occur due to a broadening of the 3d band. A decrease of the rare-earth contribution to the magnetic anisotropy energy is also observed with increasing Co content. This is attributed to a competition between the Fe and Co contributions to the crystal electric field at the Dy site.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)