Enhancement in magnetic parameters of L1(0)-FeNi on Pd-substitution for permanent magnets

Kód výsledku v IS VaVaI

RIV/68407700:21220/23:00355008 - isvavai.cz

Výsledek na webu

https://doi.org/10.1007/s12648-021-02221-y

DOI - Digital Object Identifier

10.1007/s12648-021-02221-y

Jazyk výsledku

angličtina

Název v původním jazyce

Enhancement in magnetic parameters of L1(0)-FeNi on Pd-substitution for permanent magnets

Popis výsledku v původním jazyce

In order to analyze the effect of Pd substitution on the overall electronic and magnetic properties of L1(0)-FeNi, ab-initio calculations have been performed using density functional theory (DFT) approach within generalized gradient approximation. The magnetocrystalline anisotropy for pristine FeNi is low (< 0.5 MJ/m(3)). A slight increase in its MCA is observed with single/dual substitution of Pd (from 0.430 to 0.562/0.616 MJ/m(3)) as a consequence of complex spin-orbit coupling of 4d transition element, Pd. In the nutshell, the presence of 4d-element (Pd) at Fe or/and Ni sites (except FeNi:Pd-Ni case in which Pd substitutes only Ni) improves all the magnetic parameters including maximum energy product of L1(0)-FeNi by appreciable amounts. In all these cases, the minimum requirement for permanent magnets, which is H-c > M-s/2 and kappa > 1/2, is found to be achieved. Consequently, the Pd-substituted FeNi alloys become the potential materials for rare-earth free permanent magnets.

Název v anglickém jazyce

Enhancement in magnetic parameters of L1(0)-FeNi on Pd-substitution for permanent magnets

Popis výsledku anglicky

In order to analyze the effect of Pd substitution on the overall electronic and magnetic properties of L1(0)-FeNi, ab-initio calculations have been performed using density functional theory (DFT) approach within generalized gradient approximation. The magnetocrystalline anisotropy for pristine FeNi is low (< 0.5 MJ/m(3)). A slight increase in its MCA is observed with single/dual substitution of Pd (from 0.430 to 0.562/0.616 MJ/m(3)) as a consequence of complex spin-orbit coupling of 4d transition element, Pd. In the nutshell, the presence of 4d-element (Pd) at Fe or/and Ni sites (except FeNi:Pd-Ni case in which Pd substitutes only Ni) improves all the magnetic parameters including maximum energy product of L1(0)-FeNi by appreciable amounts. In all these cases, the minimum requirement for permanent magnets, which is H-c > M-s/2 and kappa > 1/2, is found to be achieved. Consequently, the Pd-substituted FeNi alloys become the potential materials for rare-earth free permanent magnets.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

INDIAN JOURNAL OF PHYSICS

ISSN

0973-1458

e-ISSN

0974-9845

Svazek periodika

97

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

IN - Indická republika

Počet stran výsledku

6

Strana od-do

67-72

Kód UT WoS článku

000710843200001

EID výsledku v databázi Scopus

2-s2.0-85117802213