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Analysis of institutional authors

Urdiroz, UAuthorSanchez-Agudo, MAuthorCebollada, FCorresponding Author

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June 7, 2021
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Role of the interfaces in the crystallization and hysteresis mechanisms of amorphous Fe-B thin films

Publicated to: JOURNAL OF ALLOYS AND COMPOUNDS. 869 159276- - 2021-07-15 869(), DOI: 10.1016/j.jallcom.2021.159276

Authors:

Urdiroz, U; Palomares, FJ; Mayoral, A; Soldatov, I; Schäfer, R; González, JM; Sanchez-Agudo, M; Navarro, E; Ruiz, A; Alonso, M; Vázquez, L; Cebollada, F
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Affiliations

AE Consejo Super Invest Cient CSIC, Inst Ciencia Mat Madrid ICMM, Madrid 28049, Spain - Author
Leibniz Inst Solid State & Mat Res IFW Dresden, Inst Metall Mat, Helmholtzstr 20, D-01069 Dresden, Germany - Author
Tech Univ Dresden, Inst Mat Sci, D-01062 Dresden, Germany - Author
Univ Politecn Madrid, POEMMA CEMDATIC, Escuela Tecn Super Ingn Telecomunicac, Madrid 28040, Spain - Author
Univ Zaragoza, Inst Nanociencia & Mat Aragon INMA, AE Consejo Super Invest Cient CSIC, Zaragoza 50009, Spain - Author
Univ Zaragoza, Lab Microscopias Avanzadas LMA, Zaragoza 50018, Spain - Author
Ural Fed Univ, Inst Nat Sci, Ekaterinburg 620002, Russia - Author
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Abstract

In this work we study the crystallization processes of two sets of amorphous Fe80B20 films fabricated by Pulsed Laser Ablation Deposition on substrates with different nature, Corning glass (R) and MgO(001). We analyze their magnetic hysteresis mechanisms by means of magneto-optic techniques and Transmission Electron Microscopy. The as-deposited amorphous films present a highly homogeneous uniaxial magnetic anisotropy with the easy axis orientation dependent on the type of substrate and much weaker than that of bulk alloys with similar composition. The onset of crystallization for the films deposited on glass and MgO appears, respectively, at temperatures 150 degrees C and 250 degrees C below that of their bulk counterparts. We study the role of the substrate in the crystallization mechanism and the resulting nanostructure of the magnetic films. While the crystallization of the MgO-deposited films proceeds in a broad front growing from the substrate to the surface, that of the glass-deposited films takes place through the nucleation and growth of isolated crystallites. We analyze the evolution of the coercivity during the crystallization of the films. It follows a similar trend for both types, remaining in values close to those of the amorphous precursors until it rises steeply at a given annealing temperature. The threshold of the steep coercivity increase of the glass-deposited films is shifted to lower temperatures with respect to the MgO ones, in spite of the higher crystallization onset temperature of the former. The coercivity mechanisms have been analyzed, correlated to the films interfacial characteristics and compared to those of bulk alloys. (C) 2021 Elsevier B.V. All rights reserved.
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Keywords

AlloysAmorphous ferromagnetsAmorphous filmsAnnealing temperaturesBoron compoundsCoercive forceCrystallitesCrystallizationCrystallization mechanismsCrystallization onset temperatureCrystallization processDomain-structureFe80b20Field magnetic-propertiesGlassHeating rateHigh resolution transmission electron microscopyHysteresisInduced anisotropyInterfacial characteristicsIron compoundsKineticsLaser ablationMagnesiaMagnetic anisotropyMagnetismMagnetization processMagneto-optic techniquesMagneto-optical kerr microscopyOxide mineralsPhase-changePulsed laser ablation depositionsPulsed laser depositionSubstratesSurface crystallizationTemperatureThin filmThin filmsTransmission electron microscopyUniaxial magnetic anisotropy

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal JOURNAL OF ALLOYS AND COMPOUNDS 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, 2021, it was in position 5/79, thus managing to position itself as a Q1 (Primer Cuartil), in the category Metallurgy & Metallurgical Engineering. Notably, the journal is positioned above the 90th percentile.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2026-04-25:

  • Google Scholar: 7
  • WoS: 7
  • Scopus: 7
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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 2026-04-25:

  • 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: 4 (PlumX).

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.
  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: https://oa.upm.es/93938/

As a result of the publication of the work in the institutional repository, statistical usage data has been obtained that reflects its impact. In terms of dissemination, we can state that, as of

  • Views: 31
  • Downloads: 3
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Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Germany; Russia.

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (URDIROZ URRICELQUI, UNAI) and Last Author (CEBOLLADA BARATAS, FEDERICO ALBERTO).

the author responsible for correspondence tasks has been CEBOLLADA BARATAS, FEDERICO ALBERTO.

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Project objectives

La aportación persigue los siguientes objetivos: analizar los procesos de cristalización de películas delgadas amorfas Fe80B20 depositadas sobre sustratos de diferente naturaleza; evaluar los mecanismos de histéresis magnética mediante técnicas magneto-ópticas y microscopía electrónica de transmisión; determinar la influencia del sustrato en la anisotropía magnética uniaxial y en la temperatura de inicio de cristalización; caracterizar el mecanismo de cristalización y la nanostructura resultante en función del tipo de sustrato; estudiar la evolución de la coercitividad durante la cristalización y su correlación con las características interfaciales de las películas; comparar los mecanismos de coercitividad observados con los de aleaciones masivas de composición similar.
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Most relevant results

Los resultados más relevantes del estudio sobre la cristalización y mecanismos de histéresis en películas delgadas amorfas Fe80B20 depositadas en sustratos de vidrio Corning y MgO(001) son los siguientes: (1) las películas amorfas presentan una anisotropía magnética uniaxial homogénea con orientación del eje fácil dependiente del sustrato y menor que en aleaciones masivas similares; (2) la cristalización inicia a temperaturas 150 °C y 250 °C inferiores a las de los materiales masivos para vidrio y MgO, respectivamente; (3) la cristalización en MgO ocurre mediante un frente amplio desde el sustrato a la superficie, mientras que en vidrio se produce por nucleación y crecimiento de cristalitos aislados; (4) la coercitividad permanece cercana a la de los precursores amorfos hasta un aumento abrupto en una temperatura umbral, más baja en vidrio pese a su mayor temperatura de inicio de cristalización; (5) los mecanismos de coercitividad se correlacionan
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Awards linked to the item

We thank the financial support by the Spanish Research Agency (AEI), project MAT2016-80394-R, and Consejo Superior de Investigaciones Cientificas (CSIC), Ref. 2019AEP150. U.U. acknowledges FPI grant BES-2014-070387. The microscopy works have been conducted in the Laboratorio de Microscopias Avanzadas (LMA) at Instituto de Nanociencia de Aragon (INA) -Universidad de Zaragoza. Authors acknowledge the LMA-INA for offering access to their instruments and expertise. A.M. acknowledges the Spanish Ministry of Science through the Ramon y Cajal program (RYC2018-024561-I). I.S. is grateful to Deutsche Forschungsgemeinschaft for support through project SO 1623/2-1.
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