Giant magnetostriction effect in LaFe12B6 metamagnet

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10468739" target="_blank" >RIV/00216208:11320/23:10468739 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=6jKGXh0RtN" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=6jKGXh0RtN</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0144348" target="_blank" >10.1063/5.0144348</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Giant magnetostriction effect in LaFe12B6 metamagnet

Popis výsledku v původním jazyce

We investigate the complex magnetic behavior of LaFe12B6 by means of magnetostriction, and thermal expansion measurements in applied fields of up to 14 T, elucidating the interplay between crystal lattice and spins. As main results, we have discovered a remarkably large negative thermal expansion (NTE) and giant magnetostriction in this itinerant-electron system. Of particular interest are the low-temperature magnetostriction isotherms (T = 5 K) all of which reach saturation discontinuously, by way of ultrasharp multistep transitions. These are rather unusual kind of first-order phase transitions. By contrast, the field-dependent magnetostriction varies smoothly at temperatures exceeding 5 K. A huge positive magnetostrictive effect of ?V/V (20 K, 14 T) = 0.87% accompanies the field-induced first-order metamagnetic transition. In the vicinity of the Curie point, a magnetically driven giant NTE phenomenon with an average linear thermal expansion coefficient a(L) = -27 x 10(-6) K-1 is observed.

Název v anglickém jazyce

Giant magnetostriction effect in LaFe12B6 metamagnet

Popis výsledku anglicky

We investigate the complex magnetic behavior of LaFe12B6 by means of magnetostriction, and thermal expansion measurements in applied fields of up to 14 T, elucidating the interplay between crystal lattice and spins. As main results, we have discovered a remarkably large negative thermal expansion (NTE) and giant magnetostriction in this itinerant-electron system. Of particular interest are the low-temperature magnetostriction isotherms (T = 5 K) all of which reach saturation discontinuously, by way of ultrasharp multistep transitions. These are rather unusual kind of first-order phase transitions. By contrast, the field-dependent magnetostriction varies smoothly at temperatures exceeding 5 K. A huge positive magnetostrictive effect of ?V/V (20 K, 14 T) = 0.87% accompanies the field-induced first-order metamagnetic transition. In the vicinity of the Curie point, a magnetically driven giant NTE phenomenon with an average linear thermal expansion coefficient a(L) = -27 x 10(-6) K-1 is observed.

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/LM2023065" target="_blank" >LM2023065: Laboratoř pro syntézu a měření materiálů</a><br>

Návaznosti

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

Applied Physics Letters

ISSN

0003-6951

e-ISSN

1077-3118

Svazek periodika

122

Číslo periodika v rámci svazku

19

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

192402

Kód UT WoS článku

000983779000005

EID výsledku v databázi Scopus

2-s2.0-85158838945