Surface-induced magnetism in intermetallics: Ni3Ge compound as
a case study

J 2019

Surface-induced magnetism in intermetallics: Ni3Ge compound as a case study

MENG, Fanshun; Monika VŠIANSKÁ; Martin FRIÁK a Mojmír ŠOB

Základní údaje

Originální název

Surface-induced magnetism in intermetallics: Ni3Ge compound as a case study

Autoři

MENG, Fanshun; Monika VŠIANSKÁ; Martin FRIÁK a Mojmír ŠOB

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/00216224:14310/19:00113338

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

Ab initio calculations; Magnetic thin films; Surface magnetism; Intermetallic compounds; Nickel alloys

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 23. 3. 2020 10:58, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

By means of the first-principles calculations we investigate the magnetic properties of four low-index surfaces in the bulk nonmagnetic Ni3Ge intermetallic compound with the L1(2) structure. We predict that the (1 1 1) surface of Ni3Ge is magnetically ordered, with all magnetic moments located at the Ni sites. Magnetic order is also found at the Ni-terminated (0 01), (1 1 0) and (2 1 0) surfaces, however, the nonmagnetic NiGe-terminated surfaces are more stable similarly as in other L1(2) compounds. It turns out that the magnetic order in the bulk Ni3Ge is destroyed completely by the hybridization of Ge-p and Ni-d states and it is recovered at some surfaces due to the reduced coordinate number of Ni atoms. We also report on a particular distribution of magnetization at the Ni3Ge(1 1 1) surface where the ferromagnetic and anti-ferromagnetic-like states are degenerated because there are magnetically dead layers between the two magnetic surfaces and there is no interference between them. The calculated results obtained for Ni3Ge are compared with those for Ni3Al; the differences between these two compounds are discussed.

Návaznosti

LQ1601, projekt VaV

Název: CEITEC 2020 (Akronym: CEITEC2020)

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

Citovat

MENG, Fanshun; Monika VŠIANSKÁ; Martin FRIÁK a Mojmír ŠOB. Surface-induced magnetism in intermetallics: Ni3Ge compound as a case study. Journal of Magnetism and Magnetic Materials. Amsterdam: Elsevier, 2019, roč. 474, MAR 2019, s. 273-281. ISSN 0304-8853. Dostupné z: https://doi.org/10.1016/j.jmmm.2018.11.055.

@article{1638296,
   author = {Meng, Fanshun and Všianská, Monika and Friák, Martin and Šob, Mojmír},
   article_location = {Amsterdam},
   article_number = {MAR 2019},
   doi = {https://doi.org/10.1016/j.jmmm.2018.11.055},
   keywords = {Ab initio calculations; Magnetic thin films; Surface magnetism; Intermetallic compounds; Nickel alloys},
   language = {eng},
   issn = {0304-8853},
   journal = {Journal of Magnetism and Magnetic Materials},
   title = {Surface-induced magnetism in intermetallics: Ni3Ge compound as a case study},
   url = {https://www.sciencedirect.com/science/article/pii/S0304885318317475},
   volume = {474},
   year = {2019}
}

TY  - JOUR
ID  - 1638296
AU  - Meng, Fanshun - Všianská, Monika - Friák, Martin - Šob, Mojmír
PY  - 2019
TI  - Surface-induced magnetism in intermetallics: Ni3Ge compound as a case study
JF  - Journal of Magnetism and Magnetic Materials
VL  - 474
IS  - MAR 2019
SP  - 273-281
EP  - 273-281
PB  - Elsevier
SN  - 03048853
KW  - Ab initio calculations
KW  - Magnetic thin films
KW  - Surface magnetism
KW  - Intermetallic compounds
KW  - Nickel alloys
UR  - https://www.sciencedirect.com/science/article/pii/S0304885318317475
L2  - https://www.sciencedirect.com/science/article/pii/S0304885318317475
N2  - By means of the first-principles calculations we investigate the magnetic properties of four low-index surfaces in the bulk nonmagnetic Ni3Ge intermetallic compound with the L1(2) structure. We predict that the (1 1 1) surface of Ni3Ge is magnetically ordered, with all magnetic moments located at the Ni sites. Magnetic order is also found at the Ni-terminated (0 01), (1 1 0) and (2 1 0) surfaces, however, the nonmagnetic NiGe-terminated surfaces are more stable similarly as in other L1(2) compounds. It turns out that the magnetic order in the bulk Ni3Ge is destroyed completely by the hybridization of Ge-p and Ni-d states and it is recovered at some surfaces due to the reduced coordinate number of Ni atoms. We also report on a particular distribution of magnetization at the Ni3Ge(1 1 1) surface where the ferromagnetic and anti-ferromagnetic-like states are degenerated because there are magnetically dead layers between the two magnetic surfaces and there is no interference between them. The calculated results obtained for Ni3Ge are compared with those for Ni3Al; the differences between these two compounds are discussed.
ER  -

MENG, Fanshun; Monika VŠIANSKÁ; Martin FRIÁK a Mojmír ŠOB. Surface-induced magnetism in intermetallics: Ni3Ge compound as a case study. \textit{Journal of Magnetism and Magnetic Materials}. Amsterdam: Elsevier, 2019, roč.~474, MAR 2019, s.~273-281. ISSN~0304-8853. Dostupné z: https://doi.org/10.1016/j.jmmm.2018.11.055.

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