Electronic and heat transport phenomena in the nanogranular thiospinel Fe3S4

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00543534" target="_blank" >RIV/68378271:_____/21:00543534 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388980:_____/21:00543870 RIV/00216208:11310/21:10430049

Výsledek na webu

<a href="https://doi.org/10.1103/PhysRevB.103.245129" target="_blank" >https://doi.org/10.1103/PhysRevB.103.245129</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevB.103.245129" target="_blank" >10.1103/PhysRevB.103.245129</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Electronic and heat transport phenomena in the nanogranular thiospinel Fe3S4

Popis výsledku v původním jazyce

The iron sulphide Fe3S4(greigite) is similar to its oxide counterpart Fe3O4(magnetite) as to the crystal structure and ferrimagnetic order, but differs in electronic states. The ab initio calculations have evidenced p-type carriers at three spin-minority and three spin-majority Fermi surfaces, which is in contrast to the half-metallic character of magnetite with n-type carriers at three spin-minority Fermi surfaces. The transport properties including Hall and Nernst effects have been studied over the range 2–300 K by using nanogranular ceramics prepared by cold isostatic pressing of Fe3S4particles with the mean crystallite size of crystallite size of dXRD ≈ 80 and 30 nm,respectively. The samples show metalliclike electrical resistivity with large residual value at T → 0 K. The p-type character of the charge carriers is reflected by the positive sign of both the thermopower and Hall effect.

Název v anglickém jazyce

Electronic and heat transport phenomena in the nanogranular thiospinel Fe3S4

Popis výsledku anglicky

The iron sulphide Fe3S4(greigite) is similar to its oxide counterpart Fe3O4(magnetite) as to the crystal structure and ferrimagnetic order, but differs in electronic states. The ab initio calculations have evidenced p-type carriers at three spin-minority and three spin-majority Fermi surfaces, which is in contrast to the half-metallic character of magnetite with n-type carriers at three spin-minority Fermi surfaces. The transport properties including Hall and Nernst effects have been studied over the range 2–300 K by using nanogranular ceramics prepared by cold isostatic pressing of Fe3S4particles with the mean crystallite size of crystallite size of dXRD ≈ 80 and 30 nm,respectively. The samples show metalliclike electrical resistivity with large residual value at T → 0 K. The p-type character of the charge carriers is reflected by the positive sign of both the thermopower and Hall effect.

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

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Physical Review B

ISSN

2469-9950

e-ISSN

2469-9969

Svazek periodika

103

Číslo periodika v rámci svazku

24

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

17

Strana od-do

245129

Kód UT WoS článku

000664448700001

EID výsledku v databázi Scopus

2-s2.0-85109049211