Login | Register

Intrinsic magnetic properties of Ce 2 (Fe, Co) 14 B and its modifications by Ni and Cu


Intrinsic magnetic properties of Ce 2 (Fe, Co) 14 B and its modifications by Ni and Cu

Medraj, Mamoun and Wang, Tian (2018) Intrinsic magnetic properties of Ce 2 (Fe, Co) 14 B and its modifications by Ni and Cu. Journal of Alloys and Compounds . ISSN 09258388 (In Press)

[thumbnail of In Press, Accepted Manuscript]
Text (In Press, Accepted Manuscript) (application/pdf)
Medraj.pdf - Accepted Version
Available under License Spectrum Terms of Access.

Official URL: http://dx.doi.org/10.1016/j.jallcom.2018.06.017


The intrinsic magnetic properties of Ce2Fe14-xCoxB (x ≤ 4.76) are studied at 25 °C using key alloys annealed at 900 °C for 25 days. The saturation magnetization (Ms) and the Curie temperature (Tc) of Ce2Fe14-xCoxB increase with Co content. However, the anisotropy field (Ha) of Ce2Fe14-xCoxB diminishes precipitously with Co content. The process of crystal structure refinemen indicates that the saturation magnetization of Ce2Fe14-xCoxB is related to the site occupancy of Co atoms at different Fe atomic sites. Co atoms prefer to occupy 8j2 site, followed by 16k2, 4e and 16k1 sites sequentially. Moreover, Co atoms occupying 8j2 site are more effective leading to an increase in the Ms. The individual effects of Ni or Cu on the intrinsic magnetic properties of Ce2Fe12.98-xCo1.02NixB and Ce2Fe12.98-yCo1.02CuyB are evaluated. The maximum solid solubilities of Ni and Cu in Ce2Fe12.98Co1.02B at 900 °C are found to be 8 at.% and 0.8 at.%, respectively. Ni or Cu enhances Tc, but decreases both Ms and Ha of Ce2Fe12.98Co1.02B. The paper also discussed the combined effects of Ni and Cu on the intrinsic magnetic properties of Ce2Fe12.98Co1.02B. The Ms of Ce2Fe12.98-x-yCo1.02NixCuyB (0 ≤ x ≤ 0.41, y ≈ 0.119) increases after doping with both Ni and Cu, reaching around 155 emu/g. Meanwhile, the Ha and the Tc are measured to be near 24 kOe and 280 °C, respectively.

Divisions:Concordia University > Gina Cody School of Engineering and Computer Science > Mechanical and Industrial Engineering
Item Type:Article
Authors:Medraj, Mamoun and Wang, Tian
Journal or Publication:Journal of Alloys and Compounds
  • Natural Sciences and Engineering Research Council of Canada (NSERC)
Digital Object Identifier (DOI):10.1016/j.jallcom.2018.06.017
Keywords:Permanent magnets; Magnetic measurement; Magnetic Ce2Fe14-xCoxB; Saturation magnetization; Anisotropy field; Curie temperature
ID Code:983937
Deposited By: ALINE SOREL
Deposited On:06 Jun 2018 18:02
Last Modified:06 Jun 2020 00:00


J. Fidler, T. Schrefl, S. Hoefinger, M. Hajduga, Recent developments in hard magnetic bulk materials, J. Phys. Condens. Matter, 16 (2004), pp. S455–S470

A.K. Pathak, M. Khan, K.A. Gschneidner Jr., R.W. McCallum, L. Zhou, K. Sun, M.J. Kramer, V.K. Pecharsky, Magnetic properties of bulk, and rapidly solidified nanostructured (Nd1-xCex)2Fe14-yCoyB ribbons, Acta Mater., 103 (2016), pp. 211–216

J.F. Herbst, M.S. Meyer, F.E. Pinkerton, Magnetic hardening of Ce2Fe14B, J. Appl. Phys., 111 (7) (2012), pp. 1–3

E.J. Skoug, M.S. Meyer, F.E. Pinkerton, M.M. Tessema, D. Haddad, J.F. Herbst, Crystal structure and magnetic properties of
Ce2Fe14−xCoxB alloys, J. Alloys. Compd., 574 (15) (2013), pp. 552–555

K. Maaz, A. Mumtaz, S.K. Hasanain, A. Ceylan, Synthesis and magnetic properties of cobalt ferrite (CoFe2O4) nanoparticles prepared by wet chemical route, J. Magn. Magn. Mater., 308 (2007), pp. 289–295

T. Wang, D. Kevorkov, M. Medraj, Phase equilibria and magnetic phases in the Ce-Fe-Co-B system, Materials, 10 (1) (2017), p. 16

Q.M. Lu, M. Yue, H.G. Zhang, M.L. Wang, F. Yu, Q.Z. Huang, D.H. Ryan, Z. Altounian, Intrinsic magnetic properties of single-phase Mn1+xGa (0<x<1) alloys, Sci. Rep., 5 (2015), pp. 17086–17091

C.D. Fuerst, E.G. Brewer, Diffusion alloyed additives in die upset Nd-Fe-B magnets, J. Appl. Phys., 69 (8) (1991), pp. 5826–5828

F. Bolzoni, F. Leccabue, O. Moze, L. Pareti, M. Solzi, Magnetocrystalline anisotropy of Ni and Mn substituted Nd2Fe14B compounds, J. Magn. Magn. Mater., 67 (3) (1987), pp. 373–377

A.S. Kim, F.E. Camp, High performance NdFeB magnets (invited), J. Appl. Phys., 79 (8) (1996), pp. 5035–5039

X'Pert HighScore Plus PANalytical B.V. Almelo, The Netherlands (2006)

H. Putz and K. Brandenburg, Pearson's crystal data, crystal structure database for inorganic compounds, CD-ROM Software Version 1.3.

G. Asti, S. Rinaldi, Nonanaliticity of the magnetization curve: application to the measurement of anisotropy in polycrystalline samples, Phys. Rev. Lett., 28 (24) (1972), pp. 1584–1586

G. Asti, S. Rinaldi, Singular points in the magnetization curve of a polycrystalline ferromagnet, J. Appl. Phys., 45 (8) (1974), pp. 3600–3610

X. Liu, D.H. Ryan, M. Wang, Q. Lu, H. Zhang, Experimental and first-principles determination of the magnetocrystalline anisotropy in MnxGa, AIP Adv., 7 (2017), pp. 56216–56221

J.F. Herbst, R2Fe14B materials: intrinsic properties and technological aspects, Rev. Mod. Phys., 63 (1991), pp. 819–898

K. Orimoloye, D.H. Ryan, F.E. Pinkerton, M. Medraj, Intrinsic magnetic properties of Ce2Fe14B modified by Al, Ni, or Si, Appl. Sci., 8 (2) (2018), p. 205

F. Sánchez-De Jesús, A.M. Bolarín-Miró, C.A. Cortés Escobedo, G. Torres-Villaseñor, P. Vera-Serna, Structural analysis and magnetic properties of FeCo alloys obtained by mechanical alloying, J. Metall., 2016 (2016), p. 8347063

T. Wang, M. Medraj, Magnetic force microscopic study of Ce2(Fe, Co)14B, and its modifications by Ni and Cu, J. Magn. Magn. Mater., 460 (2018), pp. 95–103

R. Grössinger, X.K. Sun, R. Eibler, K.H.J. Buschow, H.R. Kirchmayr, The temperature dependence of the anisotropy field in R2Fe14B compounds (R = Y, La, Ce, Pr, Nd, Gd, Ho, Lu), J. Phys. Colloq., 46 (C6) (1985), pp. 221–224

R. Grössinger, X.K. Sun, R. Eibler, K.H.J. Buschow, H.R. Kirchmayr, Temperature dependence of anisotropy fields and initial susceptibilities in R2Fe14B compounds, J. Magn. Magn. Mater., 58 (1–2) (1986), pp. 55–60

M.Q. Huang, E.B. Boltich, W.E. Wallace, Magnetic characteristics of R2(Fe, Co)14B systems (R=Y, Nd and Gd), J. Magn. Magn. Mater., 60 (1986), pp. 270–274

N.M. Hong, N.P. Thuy, T.D. Hien, Anomalous anisotropy in the RCo4B compounds, J. Appl. Phys., 73 (10) (1993), pp. 5917–5919

J.F. Herbst, W.B. Yelon, Preferential site occupation and magnetic structure of Nd2(CoxFe1-x)14B systems, J. Appl. Phys., 60 (12) (1986), pp. 4224–4229

V.L. Dominguez, J.M. Hernàndez, J. Tejada, R.F. Ziolo, Colossal reduction in Curie temperature due to finite-size effects in CoFe2O4 nanoparticles, Chem. Mater., 25 (1) (2013), pp. 6–11

L.X. Liao, A. Altounian, D.H. Ryan, Co site preferences in iron rare-earth-based compounds, Phys. Rev. B, 47 (17) (1993), pp. 11230–11241

S.V. Vonsovski, Magnetism, Nauka, Moscow (1971)

A.A. Lukin, S. Szymura, A.A. Zhuravlyev, S.M. Margaryan, Y.M. Rabinovich, The effect of less additives on magnetic properties and microstructure of sintered Nd-(Fe, Ti, Al)-B magnets, Mater. Chem. Phys., 69 (2001), pp. 284–287

J.F. Herbst, J.J. Croat, F.E. Pinkerton, W.B. Yelon, Relationships between crystal structure and magnetic properties in Nd2Fe14B, Phys. Rev. B, 29 (7) (1984), pp. 4176–4178

X. Fan, Y. Tang, Z. Shi, M. Jiang, B. Shen, The effect of Ni addition on microstructure and soft magnetic properties of FeCoZrBCu nanocrystalline alloys, AIP Adv., 7 (2017), pp. 056107–056114

A.R. Denton, N.W. Ashcroft, Vegard's law, Phys. Rev. A, 43 (1991), pp. 3161–3164

S. Dai, A.H. Morrish, X.Z. Zhou, Mössbauer study of the permanent magnet material Nd2(Fe1−xNix)14B, J. Appl. Phys., 63 (1988), pp. 3722–3724

A.R. Miedema, F.R. de Boer, R. Boom, Model predictions for the enthalpy of formation of transition metal alloys, Calphad, 1 (1977), pp. 341–359

M. Shimizu, J. Inoue, S. Nakagawa, Electronic structure and magnetic properties of Y-Ni intermetallic compounds, J. Phys. F. Met. Phys., 14 (1984), pp. 2673–2687

Y. Fukuda, A. Fujita, M. Shimotomai, Magnetic properties of monocrystalline Nd2(Fe, Co, Ni)14B, J.
Alloys. Compd., 193 (1993), pp. 256–258

B.D. Cullity, C.D. Graham, Introduction to Magnetic Materials, John Wiley & Sons (2005)

J.F. Herbst, C.D. Fuerst, R.K. Mishra, C.B. Murphy, D.J. Van Wingerden, Coercivity enhancement of melt-spun Nd-Fe-B ribbons using low-level Cu additions, J. Appl. Phys., 69 (8) (1991), pp. 5823–5825

H. Okamoto, Phase Diagram of Binary Iron Alloys, ASM International, Materials Park, OH (1993), pp. 131–137

M. Palumbo, S. Curiotto, L. Battezzati, Thermodynamic analysis of the stable and metastable Co-Cu and Co-Cu-Fe phase diagrams, Calphad, 30 (2006), pp. 171–178
All items in Spectrum are protected by copyright, with all rights reserved. The use of items is governed by Spectrum's terms of access.

Repository Staff Only: item control page

Downloads per month over past year

Research related to the current document (at the CORE website)
- Research related to the current document (at the CORE website)
Back to top Back to top