Spin reorientation process in Tm2–xHoxFe14B : analysis of conical arrangement based on Mössbauer spectra

• Autorzy: Kurzydło P. M. , Pędziwiatr A. T. , Bogacz B. F. , Przewoźnik J. , Oleszak D.

Identyfikatory

DOI

10.1515/nuka-2017-0017

• Konferencja: All-Polish Seminar on Mössbauer Spectroscopy OSSM 2016 (11th ; 19-22 June 2016 ; Radom-Turno, Poland)
• Języki publikacji: EN

Abstrakty

EN

The spin reorientation process in the Tm2–xHoxFe14B series of compounds was studied using 57Fe Mössbauer spectroscopy over the temperature range 5.2–320 K with a focus on the analysis of conical spin arrangement. Each compound was studied by precise Mössbauer scanning in the vicinity of the transition and during the transition. By applying computer simulations based on the simplified Yamada-Kato model, as well as on some literature data for R2Fe14B (R = Tm, Ho) compounds, the above series was selected for studies as it contains compounds with different spin arrangements (axial, planar, conical). It was a crucial requirement for obtaining unambiguous angular dependences when applying a simultaneous fitting procedure of Mössbauer spectra. Such an extended procedure was applied which allowed the temperature dependence of the angle describing the position of the magnetization vector to be obtained. The results were compared with those from theoretical simulations. The spin arrangement diagram was constructed. A conical spin arrangement was confirmed over a wide temperature range.

Słowa kluczowe

EN

permanent magnetic materials; Mössbauer effect; spin reorientation; spin diagrams

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2017
• Tom: Vol. 62, No. 2
• Strony: 123--127
• Opis fizyczny: Bibliogr. 15 poz., rys.

Twórcy

autor

Kurzydło P. M.

• Marian Smoluchowski Institute of Physics, Jagiellonian University, 11 Prof. S. Łojasiewicza Str., 30-348 Kraków, Poland, Tel.: [phone], Fax: [phone]

autor

Pędziwiatr A. T.

• Marian Smoluchowski Institute of Physics, Jagiellonian University, 11 Prof. S. Łojasiewicza Str., 30-348 Kraków, Poland, Tel.: [phone], Fax: [phone]

autor

Bogacz B. F.

• Marian Smoluchowski Institute of Physics, Jagiellonian University, 11 Prof. S. Łojasiewicza Str., 30-348 Kraków, Poland, Tel.: [phone], Fax: [phone]

autor

Przewoźnik J.

• Department of Solid State Physics, Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, 30 A. Mickiewicza Ave., 30-059 Kraków, Poland

autor

Oleszak D.

• Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Wołoska Str., 02-507 Warsaw, Poland

Bibliografia

• 1. Herbst, I. F. (1991). R2Fe14B materials: Intrinsic properties and technological aspects. Rev. Mod. Phys., 63(4), 819.
• 2. O’Handley, R. C. (2000). Modern magnetic materials: Principles and applications. New York: Wiley.
• 3. Lim, J. T., Kim, H. K., Kim, C. S., An, S. Y., & Choi, K. R. (2015). Investigation of the magnetic properties of Dy doped Nd-Fe-B permanent magnet by using Mössbauer spectroscopy. J. Korean Phys. Soc., 66, 1913–1917. DOI: 10.3938/jkps.66.1913.
• 4. Pankratov, N. Yu., Nikitin, A. A., Iwasieczko, W., Drulis, H., Skokov, K. P., Pastushenkov, Yu. G., Harutjunjan, N., Lyubina, J., Gutfleisch, O., Handstein, A., & Müller, K. -H. (2006). Spin-reorientation transition in Nd2(Fe,Co)14B compounds and their hydrides. J. Magn. Magn. Mater., 300, e465–e468. DOI: 10.1016/j.jmmm.2005.10.195.
• 5. Hirosawa, S., Yutaka, M., Hitoshi, Y., Setsuo, F., Masato, S., & Hiroshi, Y. (1986). Magnetization and magnetic anisotropy of R2Fe14B measured on single crystals. J. Appl. Phys., 59, 873. DOI: 10.1063/1.336611.
• 6. Ibarra, M. R., Pareti, L., Algarabel, P. A., Morellon, L., Marquina, C., & Solzi, M. (1993). Magnetic anisotropy in (ErxHo1-x)2Fel4B pseudoternary intermetallic compounds. J. Phys.-Condens. Matter, 5(31), 5637. DOI: 10.1088/0953-8984/5/31/025.
• 7. Piqué, C., Burriel, R., & Bartolomé, J. (1996). Spin reorientation phase transitions in R2Fel4B (R = Y, Nd, Ho, Er, Tm) investigated by heat capacity measurements. J. Magn. Magn. Mater., 154, 71–82. DOI: 10.1016/0304-8853(95)00571-4.
• 8. Wolfers, P., Bacmann, M., & Fruchart, D. (2001). Single crystal neutron diffraction investigations of the crystal and magnetic structures of R2Fe14B (R=Y, Nd, Ho, Er). J. Alloy. Compd., 317/318, 39–43. DOI:10.1016/S0925-8388(00)01353-0.
• 9. Rillo, C., Chaboy, J., Navarro, R., Bartolome, J., Fruchart, D., Chenevier, B., Yaouanc, A., Sagawa, M., & Hirosawa, S. (1988). Dynamical susceptibility of Ho2Fe14B single crystal: Spin rotation and domain wall motions. J. Appl. Phys., 64, 5534–5536. DOI: 10.1063/1.342327.
• 10. Kurzydło, P. M., Pędziwiatr, A. T., Bogacz, B. F., Przewoźnik, J., & Oleszak, D. (2016). Conical spin arrangement and spin reorientation process in Er2-xHoxFe14B observed with Mössbauer spectroscopy. J. Alloy. Compd., 684, 587–593. DOI: 10.1016/j.jalcom.2016.05.140.
• 11. Yamada, M., Kato, H., Yamamoto, H., & Nakagawa, Y. (1988). Crystal-field analysis of the magnetization process in a series of Nd2Fe14B-type compounds. Phys. Rev. B, 38, 620–633. DOI: 10.1103/PhysRevB.38.620.
• 12. Burzo, E. (1998). Permanent magnets based on R–Fe–B and R–Fe–C alloys. Rep. Prog. Phys., 60, 1099–1266. DOI: 10.1088/0034-4885/61/9/001.
• 13. Coey, J. M. D. (1996). Rare-earth iron permanent magnet. Oxford: Clarendon Press.
• 14. Bogacz, B. F., & Pędziwiatr, A. T. (2013). Crystal electric field parameters determination for R2Fe14B compounds based on Yamada-Kato model. Nukleonika, 58(1), 31–33.
• 15. Susilo, R. A., Munoz Perez, S., Cobas, R., Cadogan, J. M., & Avdeev, M. (2012). Magnetic order and spinreorientation in HoGa. J. Phys.-Conf. Series, 340, 012071. DOI: 10.1088/1742-6596/340/1/012071.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).