Evidence map›Paper›PMID 42846949›Full record

ArticleFundamental research2026

Interfacial spin configurations and the microscopic origin of exchange bias at the IrMn/CoFeB interface.

Jiahao Liu, Xingtai Chen, Jiaqi Lu, Weixiang Li, Zhaochun Liu, Yongzhuo Zhang, Peter Bencok, Paul Steadman, Wenqing Liu, Weisheng Zhao and 1 more

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Article in Fundamental research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

11 authors.

Jiahao LiuFert Beijing Institute, School of Integrated Circuit Science and Engineering, Beihang University, Beijing 100191, China.
Xingtai ChenDepartment of Physics, Royal Holloway University of London, Egham, Surrey TW20 0EX, United Kingdom.
Jiaqi LuFert Beijing Institute, School of Integrated Circuit Science and Engineering, Beihang University, Beijing 100191, China.
Weixiang LiFert Beijing Institute, School of Integrated Circuit Science and Engineering, Beihang University, Beijing 100191, China.
Zhaochun LiuFert Beijing Institute, School of Integrated Circuit Science and Engineering, Beihang University, Beijing 100191, China.
Yongzhuo ZhangFert Beijing Institute, School of Integrated Circuit Science and Engineering, Beihang University, Beijing 100191, China.
Peter BencokBeamtime I10, Diamond Light Source, Didcot OX11 0DE, United Kingdom.
Paul SteadmanBeamtime I10, Diamond Light Source, Didcot OX11 0DE, United Kingdom.
Wenqing LiuElectrical Engineering Division, Department of Engineering, University of Cambridge, Cambridge CB3 0FA, United Kingdom.
Weisheng ZhaoFert Beijing Institute, School of Integrated Circuit Science and Engineering, Beihang University, Beijing 100191, China.
Shouzhong PengFert Beijing Institute, School of Integrated Circuit Science and Engineering, Beihang University, Beijing 100191, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Exchange bias fields at antiferromagnet/ferromagnet (AFM/FM) interfaces play a crucial role in the performance of spintronic devices. Despite extensive research, the physical origin of exchange bias remains incompletely understood. In this study, we conduct a detailed investigation of a prototype AFM/FM interface widely used in spintronic applications, i.e., the IrMn/CoFeB interface. High-resolution synchrotron X-ray measurements reveal the existence of uncompensated Mn spins at the interface. While most of these spins are strongly coupled to the adjacent CoFeB layer, a small fraction remains pinned to the underlying IrMn underlayer. Element-specific X-ray magnetic circular dichroism hysteresis loops show that these pinned spins can be switched by increasing the annealing magnetic field. Furthermore, micromagnetic simulations indicate that an imbalance in the quantity of antiparallel pinned spins contributes to the observed variation in exchange bias. Overall, these findings offer important insights into the microscopic mechanisms governing exchange bias and its tunability.

Indexed as

AntiferromagnetsExchange biasMagnetismSpintronicsX-ray magnetic circular dichroism

Identifiers

PMID42846949
PMCPMC13644517

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.