Puzzling Magnetism of Gd_3Cu_4Sn_4

• Authors: K. Łątka , A. Pacyna , R. Pöttgen , F. Schappacher
• Languages of publication: EN

Abstracts

EN

A polycrystalline, single phase sample of Gd_3Cu_4Sn_4 (Gd_3Cu_4Ge_4 type, Immm, a = 1473.5(1), b = 694.1(1), c = 447.2(1) pm) was synthesized by arc-melting of the elements and subsequent annealing of the sample at 1220 and 970 K, respectively. The magnetic properties of this compound were studied thoroughly by AC and DC magnetic susceptibility measurements and ^{155}Gd Mössbauer spectroscopy. These results reveal two antiferromagnetic phase transitions close to 13 and 8.6 K, respectively. The thermal variation of the magnetic hyperfine fields observed at two inequivalent Gd sites point to two magnetic substructures, which order independently.

Keywords

EN

76.80.+y; 75.30.-m

Discipline

• 76.80.+y: Mössbauer effect; other γ-ray spectroscopy(see also 33.45.+x Mössbauer spectra—in atomic and molecular physics; for biophysical applications, see 87.64.kx; for chemical analysis applications, see 82.80.Ej)
• 75.30.-m: Intrinsic properties of magnetically ordered materials(for critical point effects, see 75.40.-s; for magnetotransport phenomena, see 75.47.-m)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 114
• Issue: 6
• Pages: 1501-1508

Dates

published

2008-12

Contributors

author

K. Łątka

• M. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland

author

A. Pacyna

• H. Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, 31-342 Kraków, Poland

author

R. Pöttgen

• Institut für Anorganische und Analytische Chemie, Universität Münster, Corrensstrasse 30, 48149 Münster, Germany

author

F. Schappacher

• Institut für Anorganische und Analytische Chemie, Universität Münster, Corrensstrasse 30, 48149 Münster, Germany

References

• 1. W. Rieger, Monatsh. Chem. 101, 449 (1970)
• 2. S. Singh, S.K. Dhar, P. Manfrinetti, A. Palenzona, J. Alloys Comp. 298, 68 (2000)
• 3. C.J. Voyer, D.H. Ryan, M. Napoletano, P. Riani, J. Phys., Condens. Matter 19, 156209 (2007)
• 4. K. Tomala, G. Čižek, J. Fink, H. Schmidt, Solid State Commun. 24, 857 (1977)
• 5. G. Čižek, in: Mössbauer Spectroscopy Applied to Magnetism and Materials Science, Vol. 1, Eds. G.J. Long, F. Grandjean, Plenum Press, New York 1993, p. 373

Identifiers

DOI

10.12693/APhysPolA.114.1501