Magnetic Properties and Magnetostriction of R2Fe17H3±x (R = Tb, Dy) Hydrides

Abstract:

Article Preview

The magnetic anisotropy (MA) of trihydrides of single-crystalline rare-earth (R) intermetallics R2Fe17H3±x (R = Tb and Dy) with small deviations in the hydrogen concentration (x = 0 – 0.4) was investigated via the magnetic and magnetoelastic measurements in a wide temperature region. The easy-axis MA of Tb2Fe17H3±x is preserved in the entire range of magnetically ordered state while an “easy-cone – easy-plane” transition takes place in Dy2Fe17H3±x above ambient temperatures. The trihydrides demonstrate a significant decrease of magnetic anisotropy as the temperature increases. The temperature variation of thermal expansion of Dy2Fe17H3 displays anomalies in the vicinity of a spin-reorientation transition. The longitudinal magnetostriction λ||(T) of the same compound changes its sign at 340 K. The compounds studied can find specific applications in practice.

Info:

Periodical:

Solid State Phenomena (Volumes 233-234)

Edited by:

Nikolai Perov and Anna Semisalova

Pages:

259-262

Citation:

I. S. Tereshina et al., "Magnetic Properties and Magnetostriction of R2Fe17H3±x (R = Tb, Dy) Hydrides", Solid State Phenomena, Vols. 233-234, pp. 259-262, 2015

Online since:

July 2015

Export:

Price:

$38.00

* - Corresponding Author

[1] K.H.J. Buschow, Magnetism and Processing of Permanent Magnet Materials, in K.H.J. Buschow (Eds. ), Handbook of Magnetic Materials, Amsterdam: North-Holland, 1997, v. 10, pp.463-594.

DOI: https://doi.org/10.1016/s1567-2719(97)10008-7

[2] Gubbens P. C. M. and Buschow K. H. J., Mössbauer effect study of Tm2Fe17−xCox and Tm2Fe17−xNix compounds, Phys. Stat. Sol. (a) 34 (1976) 729-735.

DOI: https://doi.org/10.1002/pssa.2210340238

[3] Fujii H. and Sun H., Interstitial modified intermetallics of rare earth 3d elements, in: K.H.J. Buschow (Eds. ), Handbook of Magnetic Materials, Amsterdam: North-Holland, 1995, v. 9, pp.304-404.

DOI: https://doi.org/10.1016/s1567-2719(05)80007-1

[4] Tereshina E.A., Drulis. H., Skourski Y., Tereshina I.S., Strong room-temperature easy-axis anisotropy in Tb2Fe17H3: An exception among R2Fe17 hydrides, Phys. Rev. B. 87 (2013) 214425(5).

DOI: https://doi.org/10.1103/physrevb.87.214425

[5] Kuz'min M.D., Skourski Y., Skokov K.P. Muller K. -H., Gutfleish O., Determining anisotropy constants from a first-order magnetization process in Tb2Fe17, Phys. Rev. B 77 (2008) 132411(4).

DOI: https://doi.org/10.1103/physrevb.77.132411

[6] Tereshina I., Nikitin S., Suski W., Stepien-Damm J., Iwasieczko W., Drulis H., Skokov K., Structural and magnetic properties of Dy2Fe17Hx (x=0 and 3) single crystals, J. Alloys and Compounds 404-406 (2005) 172-175.

DOI: https://doi.org/10.1016/j.jallcom.2005.03.101

[7] Florio V., Baenziger N.C., Rundle R.E., Compounds of thorium with transition metals. II. Systems with iron, cobalt and nickel, Acta Cryst. 9 (1956) 367-372.

DOI: https://doi.org/10.1107/s0365110x5600108x

[8] Tereshina I.S., Doerr M., Skourski Y., Tereshina E.A., Watanabe K., Telegina I.V., Drulis H., High-field magnetization study of R2Fe17H3 (R = Tb, Dy, Ho and Er) single-crystalline hydrides, IEEE Trans. Magn. 47(10) (2011) 3617-3620.

DOI: https://doi.org/10.1109/tmag.2011.2149500