dor_id: 4128561

506.#.#.a: Público

590.#.#.d: Cada artículo es evaluado mediante una revisión ciega única. Los revisores son externos nacionales e internacionales.

510.0.#.a: Web of Science (WoS), Directory of Open Access Journals (DOAJ), Sistema Regional de Información en Línea para Revistas Científicas de América Latina, el Caribe, España y Portugal (Latindex), Scientific Electronic Library Online (SciELO), Consejo Nacional de Ciencia y Tecnología (CONACyT), La Red de Revistas Científicas de América Latina y el Caribe, España y Portugal (Redalyc)

561.#.#.u: https://www.fciencias.unam.mx/

650.#.4.x: Físico Matemáticas y Ciencias de la Tierra

336.#.#.b: article

336.#.#.3: Artículo de Investigación

336.#.#.a: Artículo

351.#.#.6: https://rmf.smf.mx/ojs/rmf/index

351.#.#.b: Revista Mexicana de Física

351.#.#.a: Artículos

270.1.#.p: Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

590.#.#.c: Open Journal Systems (OJS)

270.#.#.d: MX

270.1.#.d: México

590.#.#.b: Concentrador

883.#.#.u: http://www.revistas.unam.mx/front/

883.#.#.a: Revistas UNAM

590.#.#.a: Coordinación de Difusión Cultural, UNAM

883.#.#.1: https://www.publicaciones.unam.mx/

883.#.#.q: Dirección General de Publicaciones y Fomento Editorial, UNAM

850.#.#.a: Universidad Nacional Autónoma de México

856.4.0.u: https://rmf.smf.mx/ojs/index.php/rmf/article/view/Vol.%2064%2C%20Issue%202%2C%20pp.%20141-144/61

100.1.#.a: Zamora, J.; Betancourt, I.; Figueroa, I. A.

524.#.#.a: Zamora, J., et al. (2018). Coercivity mechanism of rare-earth free MnBi hard magnetic alloys. Revista Mexicana de Física; Vol. 64 No. 2, 2018; 141-144. Recuperado de https://repositorio.unam.mx/contenidos/4128561

245.1.0.a: Coercivity mechanism of rare-earth free MnBi hard magnetic alloys

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Facultad de Ciencias, UNAM

264.#.0.c: 2018

264.#.1.c: 2018-03-14

653.#.#.a: Magnetic materials; hard magnetic properties; coercivity.

506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY-NC-ND 4.0 Internacional, https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode.es, fecha de asignación de la licencia 2018-03-14, para un uso diferente consultar al responsable jurídico del repositorio por medio del correo electrónico rmf@ciencias.unam.mx

884.#.#.k: https://rmf.smf.mx/ojs/index.php/rmf/article/view/Vol.%2064%2C%20Issue%202%2C%20pp.%20141-144

001.#.#.#: rmf.oai:ojs2.rmf.smf.mx:article/152

041.#.7.h: eng

520.3.#.a: In this work, we present and discuss results concerning the hard magnetic behavior of rare earth-free MnBi alloys obtained by suction casting technique. The physics of coercivity for these type of alloys is based on the nucleation process of reverse domains, which in turn is determined by the alloy microstructure features such as phase distribution, morphology, grain size and in particular, defects, which are characteristic ofreal materials. The microstructure of the as-cast alloy presented here comprises the formation of the Low Temperature Intermetallic Phase (LTIP)-MnBi, interspersed within Bi- and Mn-rich areas. A considerable intrinsic coercivity field of 238 kA/m together with a saturation magnetization of 0.04 T were observed. The nucleation controlled mechanism of this alloy was described in terms of the Kronm¨uller equation, which incorporates the detrimental effect of microstructure defects through fitting parameters associated to reduced intrinsic magnetic properties at grain size boundaries, interfaces and local demagnetizing fields. A notorious switching of coercivity mechanism associated with domain wall pinning was found to be produced upon annealing of the alloy at 583 K for 24 hrs, yielding a drastic reduction of coercivity (down to 16 kA/m). The key microstructural feature determining the switching of coercivity mechanism is the formation/suppression of Bi-rich areas, which promotes the nucleation and growth of LTIP.

773.1.#.t: Revista Mexicana de Física; Vol. 64 No. 2 (2018); 141-144

773.1.#.o: https://rmf.smf.mx/ojs/rmf/index

022.#.#.a: ISSN electrónico: 2683-2224; ISSN impreso: 0035-001X

310.#.#.a: Bimestral

300.#.#.a: Páginas: 141-144

264.#.1.b: Facultad de Ciencias, UNAM

758.#.#.1: https://rmf.smf.mx/ojs/rmf/index

doi: https://doi.org/10.31349/RevMexFis.64.141

handle: 0c784459cf70af0f

harvesting_date: 2022-08-17 16:00:00.0

856.#.0.q: application/pdf

file_creation_date: 2018-02-12 16:07:29.0

file_name: 065c739366896522e8a24737f4addb4e674defc8865f03f960963405ce94ca14.pdf

file_pages_number: 4

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last_modified: 2022-11-29 12:00:00

license_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode.es

license_type: by-nc-nd

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