Effect of high pressure on magnetic properties of CrMnFeCoNi
high entropy alloy

J 2019

Effect of high pressure on magnetic properties of CrMnFeCoNi high entropy alloy

KAMARAD, J., Martin FRIÁK, J. KASTIL, O. SCHNEEWEISS, Mojmír ŠOB et. al.

Základní údaje

Originální název

Effect of high pressure on magnetic properties of CrMnFeCoNi high entropy alloy

Autoři

KAMARAD, J., Martin FRIÁK (203 Česká republika), J. KASTIL, O. SCHNEEWEISS, Mojmír ŠOB (203 Česká republika, garant, domácí) a A. DLOUHY

Vydání

Journal of Magnetism and Magnetic Materials, Amsterdam, Elsevier, 2019, 0304-8853

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10403 Physical chemistry

Stát vydavatele

Nizozemské království

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 2.717

Kód RIV

RIV/00216224:14310/19:00113337

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1016/j.jmmm.2019.165333

UT WoS

000471754300006

Klíčová slova anglicky

High entropy alloy; CrMnFeCoNi; Magnetization; High pressure

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 23. 3. 2020 10:04, Mgr. Marie Šípková, DiS.

Anotace

V originále

The temperature and magnetic field dependences of magnetization of the Cantor CrMnFeCoNi alloy were studied at ambient and high (up to 1 GPa) external pressure. The low-temperature spin-glass-like behavior and the paramagnetic behavior at temperatures above 100 K with effective paramagnetic moment of the alloy, m(eff )= 2.71 mu(B)/f.u., were observed. A negative value of the paramagnetic Curie temperature, theta(c) = - 210 K, was found that confirms a presence of strong antiferromagnetic interactions of moments in the alloy. A model of the magnetic clusters with the effective moment of m(cl) = 0.275 mu(B)/f.u. provides a possibility to describe qualitatively the pronounced difference between the pressure-induced decrease of magnetization of the ZFC and the FC alloys, dlnM/dP(5 K) = - 15.5*10(-3) GPa(-1) and - 39.2*10(-3) GPa(-1), respectively. The former value is in an excellent agreement with the value of - 16*10(-3) GPa(-1) obtained from our quantum-mechanical calculations. The negative pressure shift of the ordering temperature of the alloy, dT(ord)/dP = - 9 K/GPa, and the pressure-induced decrease of magnetization of the alloy in paramagnetic state, dlnM/dP(90 K) = -70*10(-3) GPa(-1), indicate a possible itinerant character of magnetism of the alloy. The results of theoretical calculations of the total moment of the CrMnFeCoNi fcc-alloy are discussed.

Návaznosti

LM2015085, projekt VaV

Název: CERIT Scientific Cloud (Akronym: CERIT-SC)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, CERIT Scientific Cloud

LQ1601, projekt VaV

Název: CEITEC 2020 (Akronym: CEITEC2020)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, CEITEC 2020

Citovat

KAMARAD, J., Martin FRIÁK, J. KASTIL, O. SCHNEEWEISS, Mojmír ŠOB a A. DLOUHY. Effect of high pressure on magnetic properties of CrMnFeCoNi high entropy alloy. Journal of Magnetism and Magnetic Materials. Amsterdam: Elsevier, 2019, roč. 487, OCT 1 2019, s. 1-9. ISSN 0304-8853. Dostupné z: https://dx.doi.org/10.1016/j.jmmm.2019.165333.

@article{1638237,
   author = {Kamarad, J. and Friák, Martin and Kastil, J. and Schneeweiss, O. and Šob, Mojmír and Dlouhy, A.},
   article_location = {Amsterdam},
   article_number = {OCT 1 2019},
   doi = {http://dx.doi.org/10.1016/j.jmmm.2019.165333},
   keywords = {High entropy alloy; CrMnFeCoNi; Magnetization; High pressure},
   language = {eng},
   issn = {0304-8853},
   journal = {Journal of Magnetism and Magnetic Materials},
   title = {Effect of high pressure on magnetic properties of CrMnFeCoNi high entropy alloy},
   url = {https://www.sciencedirect.com/science/article/pii/S0304885319313666},
   volume = {487},
   year = {2019}
}

TY  - JOUR
ID  - 1638237
AU  - Kamarad, J. - Friák, Martin - Kastil, J. - Schneeweiss, O. - Šob, Mojmír - Dlouhy, A.
PY  - 2019
TI  - Effect of high pressure on magnetic properties of CrMnFeCoNi high entropy alloy
JF  - Journal of Magnetism and Magnetic Materials
VL  - 487
IS  - OCT 1 2019
SP  - 1-9
EP  - 1-9
PB  - Elsevier
SN  - 03048853
KW  - High entropy alloy
KW  - CrMnFeCoNi
KW  - Magnetization
KW  - High pressure
UR  - https://www.sciencedirect.com/science/article/pii/S0304885319313666
L2  - https://www.sciencedirect.com/science/article/pii/S0304885319313666
N2  - The temperature and magnetic field dependences of magnetization of the Cantor CrMnFeCoNi alloy were studied at ambient and high (up to 1 GPa) external pressure. The low-temperature spin-glass-like behavior and the paramagnetic behavior at temperatures above 100 K with effective paramagnetic moment of the alloy, m(eff )= 2.71 mu(B)/f.u., were observed. A negative value of the paramagnetic Curie temperature, theta(c) = - 210 K, was found that confirms a presence of strong antiferromagnetic interactions of moments in the alloy. A model of the magnetic clusters with the effective moment of m(cl) = 0.275 mu(B)/f.u. provides a possibility to describe qualitatively the pronounced difference between the pressure-induced decrease of magnetization of the ZFC and the FC alloys, dlnM/dP(5 K) = - 15.5*10(-3) GPa(-1) and - 39.2*10(-3) GPa(-1), respectively. The former value is in an excellent agreement with the value of - 16*10(-3) GPa(-1) obtained from our quantum-mechanical calculations. The negative pressure shift of the ordering temperature of the alloy, dT(ord)/dP = - 9 K/GPa, and the pressure-induced decrease of magnetization of the alloy in paramagnetic state, dlnM/dP(90 K) = -70*10(-3) GPa(-1), indicate a possible itinerant character of magnetism of the alloy. The results of theoretical calculations of the total moment of the CrMnFeCoNi fcc-alloy are discussed.
ER  -

KAMARAD, J., Martin FRIÁK, J. KASTIL, O. SCHNEEWEISS, Mojmír ŠOB a A. DLOUHY. Effect of high pressure on magnetic properties of CrMnFeCoNi high entropy alloy. \textit{Journal of Magnetism and Magnetic Materials}. Amsterdam: Elsevier, 2019, roč.~487, OCT 1 2019, s.~1-9. ISSN~0304-8853. Dostupné z: https://dx.doi.org/10.1016/j.jmmm.2019.165333.

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