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Analysis of institutional authors

Camarero JAuthorVallejo-Fernández GAuthor

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January 1, 2018
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Spontaneous exchange bias formation driven by a structural phase transition in the antiferromagnetic material

Publicated to:NATURE MATERIALS. 17 (1): 28-+ - 2018-01-01 17(1), DOI: 10.1038/NMAT5030

Authors: Migliorini, A; Kuerbanjiang, B; Huminiuc, T; Kepaptsoglou, D; Munoz, M; Cunado, J L F; Camarero, J; Aroca, C; Vallejo-Fernandez, G; Lazarov, V K; Prieto, J L

Affiliations

CSIC - Instituto de Microelectronica de Barcelona (IMB-CNM) - Author
CSIC, CNM, IMN, Isaac Newton 8, Madrid 28760, Spain - Author
Daresbury Laboratory - Author
IMDEA Nanociencia - Author
IMDEA Nanosci, C Faraday,9 Campus Cantoblanco, Madrid 28049, Spain - Author
Instituto de Sistemas Optoelectronicos y Microtecnologia de UPM - Author
STFC Daresbury Labs, SuperSTEM, Keckwick Lane, Warrington WA4 4AD, Cheshire, England - Author
UAM-IFIMAC-Condensed Matter Physics Center - Author
Univ Autonoma Madrid, Condensed Matter Phys Ctr IFIMAC, E-28049 Madrid, Spain - Author
Univ Autonoma Madrid, DFMC, E-28049 Madrid, Spain - Author
Univ Autonoma Madrid, Inst Nicolas Cabrera, E-28049 Madrid, Spain - Author
Univ Politecn Madrid, ISOM, Ave Complutense 30, E-28040 Madrid, Spain - Author
Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England - Author
Universidad Autónoma de Madrid - Author
University of York - Author
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Abstract

Most of the magnetic devices in advanced electronics rely on the exchange bias effect, a magnetic interaction that couples a ferromagnetic and an antiferromagnetic material, resulting in a unidirectional displacement of the ferromagnetic hysteresis loop by an amount called the 'exchange bias field'. Setting and optimizing exchange bias involves cooling through the Néel temperature of the antiferromagnetic material in the presence of a magnetic field. Here we demonstrate an alternative process for the generation of exchange bias. In IrMn/FeCo bilayers, a structural phase transition in the IrMn layer develops at room temperature, exchange biasing the FeCo layer as it propagates. Once the process is completed, the IrMn layer contains very large single-crystal grains, with a large density of structural defects within each grain, which are promoted by the FeCo layer. The magnetic characterization indicates that these structural defects in the antiferromagnetic layer are behind the resulting large value of the exchange bias field and its good thermal stability. This mechanism for establishing the exchange bias in such a system can contribute towards the clarification of fundamental aspects of this exchange interaction.

Keywords

Astronomia / físicaChemistry (all)Chemistry (miscellaneous)Chemistry, physicalCondensed matter physicsEngenharias iiiEngenharias ivGeneral chemistryGeneral materials scienceGeneral medicineInterdisciplinarMateriaisMaterials science (all)Materials science (miscellaneous)Materials science, multidisciplinaryMechanical engineeringMechanics of materialsPhysics, appliedPhysics, condensed matter

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal NATURE MATERIALS due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2018, it was in position 3/293, thus managing to position itself as a Q1 (Primer Cuartil), in the category Physics, Condensed Matter. Notably, the journal is positioned above the 90th percentile.

From a relative perspective, and based on the normalized impact indicator calculated from World Citations provided by WoS (ESI, Clarivate), it yields a value for the citation normalization relative to the expected citation rate of: 1.35. This indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: ESI Nov 14, 2024)

This information is reinforced by other indicators of the same type, which, although dynamic over time and dependent on the set of average global citations at the time of their calculation, consistently position the work at some point among the top 50% most cited in its field:

  • Weighted Average of Normalized Impact by the Scopus agency: 1.63 (source consulted: FECYT Feb 2024)
  • Field Citation Ratio (FCR) from Dimensions: 7.38 (source consulted: Dimensions Jul 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-07-26, the following number of citations:

  • WoS: 47
  • Scopus: 46
  • Europe PMC: 7

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-07-26:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 115.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 115 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 14.85.
  • The number of mentions on the social network Facebook: 1 (Altmetric).
  • The number of mentions on the social network X (formerly Twitter): 9 (Altmetric).
  • The number of mentions in news outlets: 1 (Altmetric).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.

Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: United Kingdom.