Hostname: page-component-586b7cd67f-dsjbd Total loading time: 0 Render date: 2024-11-25T17:52:37.923Z Has data issue: false hasContentIssue false
  • English
  • Français

Magnetic Structure and Thermal Expansion of Eu4Ga8Ge16

Published online by Cambridge University Press:  11 February 2011

Henrik Birkedal ,
J. Daniel Bryan ,
Galen. D. Stucky ,
Mogens Christensen  and
Bo B. Iversen
Henrik Birkedal
Affiliation:
Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA 93106, USA.
J. Daniel Bryan
Affiliation:
Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA 93106, USA.
Galen. D. Stucky
Affiliation:
Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA 93106, USA.
Mogens Christensen
Affiliation:
Department of Chemistry, University of Aarhus, Langelandsgade 140, 8000 Århus C, Denmark.
Bo B. Iversen
Affiliation:
Department of Chemistry, University of Aarhus, Langelandsgade 140, 8000 Århus C, Denmark.
Get access

Abstract

The orthorhombic clathrate compound Eu4Ga8Ge16 orders antiferromagnetically at about 8 K. The magnetic structure is established by neutron powder diffraction while the thermal expansion and atomic displacement parameters are studied by synchrotron powder diffraction. The Eu spins align along the a-axis and achieve a zero-temperature magnetic moment equivalent to that of the free Eu2+ ion. The thermal expansion is largest along the a-axis while the expansion along c has almost the same magnitude as that along b. The Eu displacement parameters display significant residual values at 0 K, largest in the c direction.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 755: Symposium DD – Solid-State Chemistry of Inorganic Materials IV , 2002 , DD10.2
Copyright
Copyright © Materials Research Society 2003

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Slack, G.A., in CRC Handbook of Thermoelectrics, edited by Rowe, D.M. (CRC Press, Boca Raton, FL, 1995) pp. 407–40.Google Scholar
Iversen, B.B., Palmqvist, A.E.C., Cox, D.E., Nolas, G.S., Stucky, G.D., Blake, N.P. and Metiu, H., J. Sol. State Chem. 149, 455 (2000).Google Scholar
3. Bryan, J.D., Srdanov, V.I., Stucky, G.D. and Schmidt, D., Phys. Rev. B 60, 3064 (1999).Google Scholar
4. Bryan, J.D. and Stucky, G.D., Chem. Mater. 13, 253 (2001); 13, 1429 (2001).Google Scholar
5. Bentien, A., Iversen, B.B., Bryan, J.D., Stucky, G.D., Palmqvist, A.E.C., Schultz, A.J. and Henning, R.W., J. Appl. Phys. 91, 5694 (2002).Google Scholar
6. Bryan, J.D., Trill, J.H., Christensen, M., Birkedal, H., Iversen, B.B., Eckert, H., Srdanov, V. and Stucky, G.D., to be published (2002).Google Scholar
7. Christensen, M., Bryan, J.D., Birkedal, H., Stucky, G.D., Lebech, B. and Iversen, B.B., to be published (2002).Google Scholar
8. Carrillo-Cabrera, W., Paschen, S. and Grin, Y., J. Alloys Comp. 33, 4 (2002).Google Scholar
9. Nishibori, E., Takata, M., Kato, K., Sakata, M., Kubota, Y., Aoyagi, S., Kuroiwa, Y., Yamakata, M. and Ikeda, N., Nucl. Instr. Meth. A467–468, 1045 (2001).Google Scholar
10. Larson, A.C. and von Dreele, R.B., Los Alamos National Laboratory Report LAUR 86–748 (2000).Google Scholar
11. Toby, B.H., J. Appl. Cryst. 34, 210 (2001).Google Scholar
12. Rodríguez-Carvajal, J., Fullprof 2000, 2001.Google Scholar
13. Wills, A.S., Physica B 276, 680 (2000).Google Scholar
14. Wang, K. and Reeber, R.R., Appl. Phys. Lett. 76, 2203 (2000).Google Scholar
15. Bürgi, H.-B. and Capelli, S.C., Acta Cryst. A56, 403 (2000);Google Scholar
Capelli, S.C., Förtsch, M. and Bürgi, H.B., Acta Cryst., A56, 413 (2000);Google Scholar
Bürgi, H.-B., Capelli, S.C. and Birkedal, H., Acta Cryst., A56, 425 (2000).Google Scholar
16. Zhang, Y., Lee, P.L., Nolas, G.S. and Wilkinson, A.P., Appl. Phys. Lett. 80, 2931 (2002).Google Scholar
17. Wilkinson, A.P., Lind, C., Young, R.A., Shastri, S.D., Lee, P.L. and Nolas, G.S., Chem. Mater. 14, 1300 (2002).Google Scholar
18. Sales, B.C., Chakoumakos, B.C., Jin, R., Thompson, J.R. and Mandrus, D., Phys. Rev. B, 63, 245113 (2001);Google Scholar
Chakoumakos, B.C., Sales, B.C. and Mandrus, D., J. Alloys Comp. 322, 127 (2001);Google Scholar
Chakoumakos, B.C., Sales, B.C., Mandrus, D. and Nolas, G.S., J. Alloys Comp. 296, 80 (2000);Google Scholar
Bentien, A., Palmqvist, A.E.C., Bryan, J.D., Latturner, S., Stucky, G.D., Furenlid, L., Iversen, B.B., Angew. Chem. Int. Ed. 40, 1262 (2000).Google Scholar