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Time-resolved studies of the order–disorder phase transformations in rare-earth–transition metal intermetallics with 2-17 stoichiometry

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Abstract

High-temperature order–disorder transformations in R2T17 and R2T17-M-C intermetallics with R = Pr, Sm, Dy, Tb; T = Co, Fe; and M = Zr, Nb were studied utilizing time-resolved synchrotron x-ray diffraction at the Advanced Photon Source (APS) at the U.S. Department of Energy’s Argonne National Laboratory (Argonne, IL). High-energy synchrotron radiation provides intense, highly penetrating x-rays, which are ideal for in situ studies of phase transformations. Alloying additions are used to stabilize formation of metastable phases; their influence on order recovery was investigated. The experimental setup utilized Debye–Scherrer geometry; specimens were heated at a rate of 10 K/min. Full-profile diffraction patterns collected every 10 s were refined in sequence using the Rietveld method to track changes of lattice parameters and phase assemblages during heating. Sharp changes observed in the evolution of temperature-dependent lattice parameters suggested formation of ordered structure via nucleation and growth. Both 2-17 polymorphs co-existed in light and heavy rare-earth systems at high temperatures. The presence of alloying additions in the solid solution greatly influenced long-range order formation.

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References

  1. Y. Khan: The crystal structures of R2Co17 intermetallic compounds. Acta Crystallogr., Sect. B: Struct. Sci. 29, 2502 1973

    Article  CAS  Google Scholar 

  2. W.E. Wallace: Rare earth-transition metal permanent magnet materials. Prog. Solid State Chem. 16, 127 1985

    Article  CAS  Google Scholar 

  3. Z.D. Zhang, W. Liu, J.P. Liu, D.J. Sellmyer: Metastable phases in rare-earth permanent-magnet materials. J. Phys. D: Appl. Phys. 33, R217 2000

    Article  CAS  Google Scholar 

  4. V. Sima: Order–disorder transformations in materials. J. Alloys Compd. 378, 44 2004

    Article  CAS  Google Scholar 

  5. Physical Metallurgy, 2nd ed. edited by R.W. Cahn North-Holland Publishing Company, Amsterdam 1970 531

    Google Scholar 

  6. J.W. Christian: The Theory of Transformations in Metals and Alloys Pergamon Press Headington Hill Hall, Oxford, UK 1965 214–216 697–703

    Google Scholar 

  7. X.H. Li, B.T. Liu, W. Li, H.Y. Sun, D.Q. Wu, X.Y. Zhang: Atomic ordering kinetics of FePt thin films: Nucleation and growth of L10 ordered domains. J. Appl. Phys. 101, 093911 2007

    Article  Google Scholar 

  8. K. Barmak, J. Kim, S. Shell: Calorimetric studies of the A1 to L10 transformation in FePt and CoPt thin films. Appl. Phys. Lett. 80, 4268 2002

    Article  CAS  Google Scholar 

  9. J.E. Shield, B.B. Kappers, B.E. Meacham, K.W. Dennis, M.J. Kramer: Microstructures and phase formation in rapidly solidified Sm-Fe alloys. J. Alloys Compd. 351, 106 2003

    Article  CAS  Google Scholar 

  10. S. Aich, J. Kostogorova, J.E. Shield: Magnetic behavior of Sm–Co-based permanent magnets during order/disorder phase transformations. J. Appl. Phys. 97, 10H108 2005

    Article  Google Scholar 

  11. Y.Y. Kostogorova-Beller, J.E. Shield, M.J. Kramer: Order–disorder transformations in Sm–Co and Sm–Co–ZrC systems with 2-17 stoichiometry. J. Appl. Phys. 101, 09K521 2007

    Article  Google Scholar 

  12. L.J. Gray, M.F. Chisholm, T. Kaplan: Surface strains in epitaxial systems. Appl. Phys. Lett. 66, 1924 1995

    Article  CAS  Google Scholar 

  13. C. Kim, I.K. Robinson, T. Spila, J.E. Greene: Local strain relaxation in Si0.7Ge0.3 on Si(001) induced by Ga+ irradiation. J. Appl. Phys. 83, 7608 1998

    Article  CAS  Google Scholar 

  14. F. Buta, M.D. Sumption, E.W. Collings: Influence of transformation heat treatment on microstructure and defects in RHQT-processed Nb3Al. IEEE Trans. Appl. Supercond. 13, 3458 2003

    Article  CAS  Google Scholar 

  15. P.F. Peterson, Th. Proffen, I-K. Jeong, S.J.L. Billinge, K-S. Choi, M.G. Kanatzidis, P.G. Radaelli: Local atomic strain in ZnSi1−xTex from high real space resolution neutron pair distribution function measurements. J. Appl. Crystallogr. 33, 1192 2000

    Article  CAS  Google Scholar 

  16. S. Aich, J.E. Shield: A study on the order–disorder phase transformations of rapidly solidified Sm–Co-based permanent magnets. J. Magn. Magn. Mater. 313, 76 2007

    Article  CAS  Google Scholar 

  17. J. Kostogorova, J.E. Shield: Magnetic behavior of rapidly solidified Pr-Co alloys with the TbCu7-type structure. J. Appl. Phys. 99, 08B514 2006

    Article  Google Scholar 

  18. M.Q. Huang, W.E. Wallace, M. McHenry, Q. Chen, B.M. Ma: Structure and magnetic properties of SmCo7−xZrx alloys (x = 0 to 0.8). J. Appl. Phys. 83, 6718 1998

    Article  CAS  Google Scholar 

  19. C. Jiang, M. Venkatesan, K. Gallagher, J.M.D. Coey: Magnetic and structural properties of SmCo7−xTix magnets. J. Magn. Magn. Mater. 236, 49 2001

    Article  CAS  Google Scholar 

  20. B.E. Meacham, J.E. Shield, D.J. Branagan: Control of ordering and microstructure in Pr–Co and Sm–Fe alloys for permanent magnets. IEEE Trans. Magn. 37, 2503 2001

    Article  CAS  Google Scholar 

  21. K.H.J. Buschow, A.S. Van Der Goot: Intermetallic compounds in the system samarium-cobalt. J. Less Common Met. 14, 323 1968

    Article  CAS  Google Scholar 

  22. K.H.J. Buschow, F.J.A. Den Broeder: The cobalt-rich regions of the samarium-cobalt and gadolinium-cobalt phase diagrams. J. Less Common Met. 33, 191 1973

    Article  CAS  Google Scholar 

  23. L. Cataldo, A. Lefevre, F. Ducret, M-Th. Cohen-Adad, C. Allibert, N. Valignat: Binary system Sm–Co: Revision of the phase diagram in the Co rich field. J. Alloys Compd. 241, 216 1996

    Article  CAS  Google Scholar 

  24. R. Rani, H. Hedge, A. Navarathna, K. Chen, F.J. Cadieu: Synthesis and properties of magnetically hard two element Sm5Fe17 phase in sputtered films. IEEE Trans. Magn. 28, 2835 1992

    Article  CAS  Google Scholar 

  25. H.H. Stadelmaier, G. Schneider, E-Th. Henig, M. Ellner: Magnetic Fe17R5 in the Fe–Nd and Fe(–Ti)–Sm systems, and other phases in Fe–Nd. Mater. Lett. 10, 303 1991

    Article  CAS  Google Scholar 

  26. F. Leccabue, R. Panizzieri, G. Bocelli, G. Calestani, J.L. Sanchez: Magnetic and structural study of high-coercivity as-cast rare-earth-iron alloys. Mater. Lett. 11, 124 1991

    Article  CAS  Google Scholar 

  27. F.J. Cadieu, H. Hegde, R. Rani, A. Navarathna, K. Chen: Cell volume expansion in Sm5(Fe, T)17, T = Ti, V, magnetic phases. Mater. Lett. 11, 284 1991

    Article  CAS  Google Scholar 

  28. M.J. Kramer, L. Margulies, R.W. McCallum, D.K. Finnemore, A.I. Goldman, S. Kycia, P.L. Lee, D.R. Haeffner: Time-resolved studies of phase transformations using high-temperature powder diffraction. AIP Conf. Proc. 521, 141 2000

    Article  CAS  Google Scholar 

  29. N. Yang, K.W. Dennis, R.W. McCallum, M.J. Kramer, Y. Zhang, P.L. Lee: Spontaneous magnetostriction in R2Fe14B (R = Y, Nd, Gd, Tb, Er). J. Magn. Magn. Mater. 295, 65 2005

    Article  CAS  Google Scholar 

  30. C. Jourdan, G. Grange, J. Gastaldi: In situ investigation by synchrotron x-ray topography of titanium recrystallization induced by phase transformation. J. Less Common Met. 159, 53 1990

    Article  CAS  Google Scholar 

  31. M. Dehmas, P. Weisbecker, G. Geandier, P. Archambault, E. Aeby-Gautier: Experimental study of phase transformations in 3003 aluminum alloys during heating by situ high energy x-ray synchrotron radiation. J. Alloys Compd. 400, 116 2005

    Article  CAS  Google Scholar 

  32. Y.Y. Kostogorova-Beller, M.J. Kramer, J.E. Shield: Phase formation in rapidly solidified R2T17 intermetallics. J. Alloys Compd. 463, 207 2008

    Article  CAS  Google Scholar 

  33. L. Margulies, M.J. Kramer, R.W. McCallum: New high temperature furnace for structure refinement by powder diffraction in controlled atmosphere using synchrotron radiation. Rev. Sci. Instrum. 70, 3554 1999

    Article  CAS  Google Scholar 

  34. A.P. Hammersley, S.O. Svensson, M. Hanfland, A.N. Fitch, D. Hausermann: Two-dimensional detector software: From real detector to idealized image or two-theta scan. High Pressure Res. 14, 235 1996

    Article  Google Scholar 

  35. A.C. Larson, R.B. Von Dreele: General Structure Analysis System (GSAS). Los Alamos National Laboratory Rep. No. LAUR 86, 748 2000

    Google Scholar 

  36. B.H. Toby: EXPGUI, a graphical user interface for GSAS. J. Appl. Crystallogr. 34, 210 2000

    Article  Google Scholar 

  37. H. Baker: ASM Handbook. Phase Diagrams. Vol. 3 ASM International Materials Park, OH 1997

  38. G. Schneider, F.J.G. Landgraf, V. Villas-Boas, G.H. Bezerra, F.P. Missell, A.E. Ray: New stable phase in binary Fe-Nd system. Mater. Lett. 8, 472 1989

    Article  CAS  Google Scholar 

  39. K. Schnitzke, L. Schultz, J. Wecker, M. Katter: Sm–Fe–Ti magnets with room-temperature coercivities above 50 kOe. Appl. Phys. Lett. 56, 587 1990

    Article  CAS  Google Scholar 

  40. N. Kamprath, X.R. Qian, H. Hegde, F.J. Cadieu: Magnetic properties of Sm–Fe–Ti–Al sputtered films with iHc greater than 30 kOe. J. Appl. Phys. 67, 4948 1990

    Article  CAS  Google Scholar 

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Acknowledgments

This project was supported by National Science Foundation under Grant No. DMR0305354. Work at the Ames Laboratory was supported by the Department of Energy, Office of Basic Energy Sciences, under Contract No. DE-AC02-07CH11358. The high-energy x-ray work at the Midwest Universities Collaborative Access Team (MUCAT) sector of the APS was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under Contract No. DE-AC02-06CH11357.

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Authors and Affiliations

  1. Department of Engineering Mechanics, University of Nebraska—Lincoln, Lincoln, Nebraska, 68588-0526, USA

    Y.Y. Kostogorova-Beller

  2. Iowa State University, Materials Science and Engineering, Ames, Iowa, 50011-3020, USA

    M.J. Kramer

  3. Department of Mechanical Engineering, University of Nebraska—Lincoln, Lincoln, Nebraska, 68588, USA

    J.E. Shield

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  1. Y.Y. Kostogorova-Beller
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  3. J.E. Shield
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Correspondence to Y.Y. Kostogorova-Beller.

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Kostogorova-Beller, Y., Kramer, M. & Shield, J. Time-resolved studies of the order–disorder phase transformations in rare-earth–transition metal intermetallics with 2-17 stoichiometry. Journal of Materials Research 23, 2886–2896 (2008). https://doi.org/10.1557/JMR.2008.0377

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