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; J. KASTIL; O. SCHNEEWEISS; Mojmír ŠOB 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

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/19:00113337

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

High entropy alloy; CrMnFeCoNi; Magnetization; High pressure

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 23. 3. 2020 10:04, Mgr. Marie Novosadová 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://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 = {https://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://doi.org/10.1016/j.jmmm.2019.165333.

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