XPS spectra, electronic structure, and magnetic properties of RFe5Al7 intermetallics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F18%3A00501205" target="_blank" >RIV/68378271:_____/18:00501205 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jallcom.2017.10.294" target="_blank" >http://dx.doi.org/10.1016/j.jallcom.2017.10.294</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2017.10.294" target="_blank" >10.1016/j.jallcom.2017.10.294</a>

Jazyk výsledku

angličtina

Název v původním jazyce

XPS spectra, electronic structure, and magnetic properties of RFe5Al7 intermetallics

Popis výsledku v původním jazyce

The results of X-ray photoelectron spectroscopy measurements of R5Al7 (R = Lu, Tm, Er, Ho, Dy, Tb, Gd) single crystals are presented in comparison with the results of bulk magnetization studies and electronic structure calculations. It is shown that the increase of the Curie temperature in R5Al7 from Tm to Gd is associated with an increase of the indirect 4f–3d exchange interaction at the expense of the multiplicity 2S + 1 (statistical weight) in the ground state of R3+ ions. The non-monotonic behavior of the ferrimagnetic compensation temperature and magnetic moment in the series is explained by difference in the quantum numbers L, J and S of the ground state of R3+ ions, leading to maximum values for the Dy compound. The electronic structure of Gd/LuFe5Al7 is calculated using the LSDA+U approach. The difference in the magnetic moments of iron atoms in different structural positions is explained.

Název v anglickém jazyce

XPS spectra, electronic structure, and magnetic properties of RFe5Al7 intermetallics

Popis výsledku anglicky

The results of X-ray photoelectron spectroscopy measurements of R5Al7 (R = Lu, Tm, Er, Ho, Dy, Tb, Gd) single crystals are presented in comparison with the results of bulk magnetization studies and electronic structure calculations. It is shown that the increase of the Curie temperature in R5Al7 from Tm to Gd is associated with an increase of the indirect 4f–3d exchange interaction at the expense of the multiplicity 2S + 1 (statistical weight) in the ground state of R3+ ions. The non-monotonic behavior of the ferrimagnetic compensation temperature and magnetic moment in the series is explained by difference in the quantum numbers L, J and S of the ground state of R3+ ions, leading to maximum values for the Dy compound. The electronic structure of Gd/LuFe5Al7 is calculated using the LSDA+U approach. The difference in the magnetic moments of iron atoms in different structural positions is explained.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/GA16-03593S" target="_blank" >GA16-03593S: Magnetismus f-elektronových intermetalik</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Alloys and Compounds

ISSN

0925-8388

e-ISSN

—

Svazek periodika

733

Číslo periodika v rámci svazku

Feb

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

82-90

Kód UT WoS článku

000415932500011

EID výsledku v databázi Scopus

2-s2.0-85033573632