Magnetic phase transitions of all-d metal Heusler type model
Yükleniyor...
Dosyalar
Tarih
2020
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
ELSEVIER SCIENCE SA
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The magnetic phase transitions of all-d metal Heusler type model, Ni(2)MnZ (Z = Ti, Sc and V), are investigated by using the double-time Green's Function Method within the random phase approximation. We assume that the magnetic moments of Ni, Mn, and Z in Ni(2)MnZ which crystallized in L2(1) structure is localized on their atom and the next-nearest neighbor interactions between Mn atoms are negative. While the Z atoms give only a small contribution to the total magnetic moment, it is emphasized that the importance of existence of antiferromagnetic interaction between Z atom and other atoms in observing first-order phase transitions. Ni(2)MnZ shows a ferromagnetic state depending the values of the Hamiltonian parameters. If any one of these interactions have negative value and the system is subject to an external magnetic field, it is observed that the magnetization curves exhibit to the first-order phase transitions. (C) 2019 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
All-d-metal Heusler structures, Ferromagnetism, Heisenberg model, Green's function, Random phase approximation
Kaynak
JOURNAL OF ALLOYS AND COMPOUNDS
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
819
Sayı
Künye
Mert, G. (2020). Magnetic Phase Transitions of All-d Metal Heusler Type Model. Journal of Alloys and Compounds, 819, 1-6.
