Perpendicular Magnetic Anisotropy Revealed by c/a Ratio of Mn2NiB Heusler Alloy
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Tarih
2021
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
c/a ratio effects on the magnetic properties of the Mn2NiB Heusler alloy are investigated by using effective field theory developed by Kaneyoshi. It is found that the Curie temperature and coercive fields of the Mn2NiB are obtained as Tc-IT > Tc(C) > Tc-NT = 0.92 and Hc(IT) > Hc(C) > Hc(NT) = 0.00 for c/a < 1 (inverse tetragonal), c/a = 1 (cubic), and c/a > 1 (normal tetragonal), respectively. These magnetic differences show that the c/a ratio causes a perpendicular magnetic anisotropy (PMA). Therefore, we suggest that PMA strongly depends on the c/a ratio, atomic distance, and exchange interactions between two atoms (Mn-Ni and Mn-B) on the ca surfaces of the Mn2NiB.
Açıklama
Anahtar Kelimeler
c/a ratio; Perpendicular magnetic anisotropy; Mn2NiB Heusler alloy; Effective field theory
Kaynak
Journal of Superconductivity and Novel Magnetism
WoS Q Değeri
Q4
Scopus Q Değeri
Q2
Cilt
34
Sayı
3
