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Chirality Switching and Winding or Unwinding of the Antiferromagnetic NiO Domain Walls in Fe/NiO/Fe/CoO/Ag(001)
J. Li; A. Tan; S. Ma; R. F. Yang; E. Arenholz; C. Hwang; Z. Q. Qiu
2014
Source PublicationPhysical Review Letters
ISSN0031-9007
Volume113Issue:14
AbstractFe/NiO/Fe/CoO/Ag(001) single crystalline films were grown epitaxially and investigated by x-ray magnetic circular dichroism and x-ray magnetic linear dichroism. The bottom Fe layer magnetization is pinned through exchange coupling to the CoO layer and the top Fe layer magnetization can be rotated by an in-plane external magnetic field. We find that the NiO spins wind up to form a domain wall due to the perpendicular NiO/Fe interfacial coupling as the top layer Fe magnetization rotates from 0 degrees to 90 degrees, but switch wall chirality and unwind the wall as the Fe magnetization rotates from 90 degrees to 180 degrees. This observation shows that Mauri's 180 degrees domain wall does not exist in perpendicularly coupled ferromagnetic-antiferromagnetic systems in the strong coupling regime.
description.department[li, j. ; tan, a. ; ma, s. ; yang, r. f. ; qiu, z. q.] univ calif berkeley, dept phys, berkeley, ca 94720 usa. [ma, s.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [arenholz, e.] univ calif berkeley, lawrence berkeley natl lab, adv light source, berkeley, ca 94720 usa. [hwang, c.] korea res inst stand & sci, taejon 305340, south korea. ; li, j (reprint author), univ calif berkeley, dept phys, berkeley, ca 94720 usa.
KeywordExchange Bias Model Anisotropy Films Interfaces
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/73269
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
J. Li,A. Tan,S. Ma,et al. Chirality Switching and Winding or Unwinding of the Antiferromagnetic NiO Domain Walls in Fe/NiO/Fe/CoO/Ag(001)[J]. Physical Review Letters,2014,113(14).
APA J. Li.,A. Tan.,S. Ma.,R. F. Yang.,E. Arenholz.,...&Z. Q. Qiu.(2014).Chirality Switching and Winding or Unwinding of the Antiferromagnetic NiO Domain Walls in Fe/NiO/Fe/CoO/Ag(001).Physical Review Letters,113(14).
MLA J. Li,et al."Chirality Switching and Winding or Unwinding of the Antiferromagnetic NiO Domain Walls in Fe/NiO/Fe/CoO/Ag(001)".Physical Review Letters 113.14(2014).
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