Study of the Structural and Magnetic Properties of Gd0.257-xNdxFe0.743 as Obtained by Mechanical AlloyinG

Hugo Martínez Sánchez, Yebrayl Rojas Martínez, Dagoberto Oyola Lozano, Humberto Bustos Rodríguez

Abstract


This paper presents the study of structural and magnetic properties in the composition Gd0.257-xNdxFe0.743 where x = 0,  0.1285,  0.257 prepared by mechanical alloying in an argon atmosphere and with a milling time of 72 hours using a high energy planetary mill. The magnetic and structural characterization was performed by Mössbauer Spectroscopy (MS) and X-Ray diffraction (XRD), respectively. The three patterns show an intense peak corresponding to the α-Fe phase. Its intensity decreases as Gd is replaced by Nd showing the minimum intensity for x =0.257, and at the same time it shows a progressive increase in the peak’s width. These effects are attributed to the rich presence of Gd and/or Nd atoms in the iron sites. Mössbauer spectra were adjusted with hyperfine field distributions, sextets and singlets using the Mosfit program. The spectra show that by substituting the Gd with Nd atoms, the magnetic order is affected in such a way that iron sites appear and show magnetic disorder. 


Keywords


Mechanical Alloying, Mössbauer Spectroscopy, Rare Earth Alloys and Transition Metals, X-Ray Diffraction, Structural and Magnetic Properties.

Full Text:

PDF

References


Arrabal, R.; Matykina, E.; Pardo, A.; Merino, M.C.; Paucar, K.; Mohedano, M.; Casajús, P. (2011). Corrosion behaviour of AZ91D and AM50 magnesium alloys with Nd and Gd additions in humid environments. Corrosion Science, 55(2012), Octubre, pp. 351–362. [Online] Disponible en: http://www.sciencedirect.com/science/article/pii/S0010938X 11006019

Biondo, A.; Larica, C.; Alves, K.M.B.; Guimarães, A.P.; Baggio-Saitovitch, E. (1997). The effects of high-energy milling on GdFe2. Journal of Magnetism and Magnetic Materials, 176 (1997), Abril, pp. 272-278. [Online] Disponible en: http://www.sciencedirect.com/ science/article/pii/S0304885397004976

Chaudari, P.; Cuomo, J.J.; Gambino, R.J. (1973). Amorphous Metallic Films for Magneto-optic Applications. Applied Physics Letters, 22(7), pp. 337-339. [Online] Disponible en: http: //dx.doi.org/10.1063/1.1654662

Pawlik, K.; Wyslocki, J.J.; Bodak, O.I.; Pawlik, P.; Demchenko; P. (2005). The effect of Nd content on the phase structure and magnetic properties of Nd–Fe alloys produced by various methods. Journal of Magnetism and Magnetic Materials, 290–291, Abril, pp. 636–639. [Online] Disponible en: http://www.sciencedirect.com/science/article/pii/S030 4885304015495

Sallica, E.; Peña-Rodríguez, V.A.; Vásquez-Mansilla, M.; Butera, A. (2009). Dependencia de las propiedades magnéticas con el espesor en películas delgadas de FePt. Revista de Investigación de Física, 12(2), Noviembre, pp. 22-29. [Online] Disponible en: http://www.rif-fisica.org/images/e/e7/Rifl2_2_22-29.pdf

Shand, P.M.; Schmitter, D.C.; Rojas, G.; Shieldc, J.E.; Goertzenc, J.; Meyer, A.L.; Pekarek, T.M.; Kramer, M.J.; Leslie-Pelecky, D.L. (2010). Correlating structure with ferromagnetism in melt-spun Gd100−xFex. Journal of Alloys and Compounds, 509(2011), Noviembre, pp. 3000–3005. [Online] Disponible en: http://www.sciencedirect.com/science/ article/pii/S0925838810029488

Suryanarayana, C. (1887). Mechanical alloying and milling. Progress in Materials Science, 46(2001), pp. 1-184. [Online] Disponible en: http://www.sciencedirect.com/science/article/ pii/S0079642599000109.

Varret, F.; Teillet, J. [unpublished] MOSFIT Program, Université du Maine, Le Mans, France.

Zhang, M.; Zhang, Z.D.; Sun, X.K.; Liu, W.; Geng, D.Y.; Zhao, X.G.; Jin, X.M. (2003). Effect of substitution of Gd for Nd on the magnetic properties of Nd2Fe14B_α-Fe nanocomposite magnets. Journal of Alloys and Compounds, 364(2004), Abril, pp. 238-241. [Online] Disponible en: http://www.sciencedirect.com/science/article/pii/S0925838 803005334.


Article Metrics

Abstract Views
92




Metrics Loading ...

Refbacks

  • There are currently no refbacks.


UNIVERSIDAD EIA

Sede de Las Palmas: Km 2 + 200 Vía al Aeropuerto José María Córdova Envigado, Colombia. Código Postal: 055428
Tel: (574) 354 90 90. Fax: (574) 386 11 60

Sede de Zúñiga: Calle 25 Sur 42-73 Envigado, Colombia. Código Postal: 055420
Tel: (574) 354 90 90. Fax: (574) 331 34 78
NIT: 890.983.722-6

Sistema OJS - Metabiblioteca |