Origin of Magnetic Anisotropy of Gd_{5}Si_{2}Ge_{2} Compound

• Authors: R. Szymczak , R. Kolano , A. Kolano-Burian , L. Hawelek , B. Krzymanska , P. Aleshkevich , V. Dyakonov , H. Szymczak
• Languages of publication: EN

Abstracts

EN

The second-order anisotropy constant K_2 in polycrystalline Gd_5Si_2Ge_2 giant magnetocaloric material was measured as a function of temperature by the modified singular point detection technique. Although the structural, electrical, thermal, magnetic and magnetocaloric properties of the Gd_5Si_2Ge_2 have been rather well investigated experimentally, magnetic anisotropy of this system is almost unknown. The singularity indicating the anisotropy field was determined analyzing ac susceptibility data taking into account several features of the magnetization curve. The temperature dependence of the anisotropy fields was measured from 4.2 K up to the Curie temperature. The observed relationship between K_2 (T)/K_2 (0) and magnetization M (T)/M (0) was explained assuming dipolar origin of magnetic anisotropy of Gd_5Si_2Ge_2 compound.

Keywords

EN

75.30.Gw; 75.30.Sg

Discipline

• 75.30.Gw: Magnetic anisotropy
• 75.30.Sg: Magnetocaloric effect, magnetic cooling(for cryogenics, see 07.20.Mc)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 5-6
• Pages: 1261-1262

Dates

published

2012-05

Contributors

author

R. Szymczak

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

author

R. Kolano

• Institute of Non-Ferrous Metals, Gliwice, Poland

author

A. Kolano-Burian

• Institute of Non-Ferrous Metals, Gliwice, Poland

author

L. Hawelek

• Institute of Non-Ferrous Metals, Gliwice, Poland

author

B. Krzymanska

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

author

P. Aleshkevich

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

author

V. Dyakonov

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

author

H. Szymczak

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

References

• 1. V.K. Pecharsky, K.A. Gschneidner Jr., Phys. Rev. Lett. 78, 4494 (1997)
• 2. H. Tang, V.K. Pecharsky, G.D. Samolyuk, M. Zou, K.A. Gschneidner Jr., V.P. Antropov, D.L. Schlagel, T.A. Lograsso, Phys. Rev. Lett. 93, 237203 (2004)
• 3. L. Morellon, P.A. Algarabel, M.R. Ibarra, J. Blasco, B. Garcıa-Landa, Phys. Rev. B 58, R14721 (1998)
• 4. L. Morellon, J. Stankiewicz, B. Garcıa-Landa, P.A. Algarabel, M.R. Ibarra, Appl. Phys. Lett. 73, 3462 (1998)
• 5. J. Leib, C.C.H. Lo, J.E. Snyder, D.C. Jiles, IEEE Trans. Magn. 38, 2447 (2002)
• 6. M. Han, J.E. Synder, W. Tang, T.A. Lograsso, D.L. Schlagel, D.C. Miles, J. Appl. Phys. 97, 10M313 (2005)
• 7. G. Asti, S. Rinaldi, J. Appl. Phys. 45, 3600 (1974)
• 8. F. Bolzoni, R. Cabassi, Physica B 346-347, 524 (2004)
• 9. G. Turilli, J. Magn. Magn. Mater. 130, 377 (1994)
• 10. E.R. Callen, H.B. Callen, Phys. Rev. 129, 578 (1963)
• 11. L. Tan, A. Kreyssig, S. Nandi, S. Jia, Y.B. Lee, J.C. Lang, Z. Islam, T.A. Lograsso, D.L. Schlagel, V.K. Pecharsky, K.A. Gschneidner, Jr., P.C. Canfield, B.N. Harmon, R.J. McQueeney, A.I. Goldman, Phys. Rev. B 77, 064425 (2008)

Identifiers

DOI

10.12693/APhysPolA.121.1261