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Layered CMR Manganites: Structure, Properties, and Unconventional Magnetism

Published online by Cambridge University Press:  15 February 2011

J. F. Mitchell ,
D. N. Argyriou ,
C. D. Potter ,
J. D. Jorgensen ,
D. G. Hinks  and
S. D. Bader
J. F. Mitchell
Affiliation:
Materials Science Division, Argonne National Laboratory, 9700 S. Cass Ave., Argonne, Il 60439
D. N. Argyriou
Affiliation:
Materials Science Division, Argonne National Laboratory, 9700 S. Cass Ave., Argonne, Il 60439
C. D. Potter
Affiliation:
Materials Science Division, Argonne National Laboratory, 9700 S. Cass Ave., Argonne, Il 60439
J. D. Jorgensen
Affiliation:
Materials Science Division, Argonne National Laboratory, 9700 S. Cass Ave., Argonne, Il 60439
D. G. Hinks
Affiliation:
Materials Science Division, Argonne National Laboratory, 9700 S. Cass Ave., Argonne, Il 60439
S. D. Bader
Affiliation:
Materials Science Division, Argonne National Laboratory, 9700 S. Cass Ave., Argonne, Il 60439
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Abstract

Neutron powder diffraction studies of the layered compounds R1.2Sr1.8Mn2O7, (R = La,Pr, Nd), RSr2Mn2O7 (R = Pr,Nd),and La1.4Sr1.6Mn2O7 show that the degree of distortion of the MnO6 octahcdra do not correlate with the appearance of a metal-insulator (MI) transition in these compounds. Instead, the in-plane Mn-O bond length appears to be a better indicator of the electronic behavior. Detailed bulk magnetization studies on single crystal La1.2Sr1.8Mn2O7 show thai there are three magnetic regimes as a function of temperature: paramagnetic insulator, short-range ordered (SRO) fcrrromangct, and long-range ordered (LRO) fcrromagnct. Scaling analysis indicates that a 2D finite-size XY model is an appropriate description of the magnetic state in the SRO regime.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 453: Symposium R – Solid State Chemistry of Inorganic Materials , 1996 , 343
Copyright
Copyright © Materials Research Society 1997

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References

REFERENCES

1. Shimakawa, Y., Kubo, Y. and Manako, T., Naure 379, 53 (1996).Google Scholar
2. Cheong, S-W., Hwang, H.Y., Batlogg, B. and Rupp, L.W. Jr, Solid State Comm. 98, 163 (1996).Google Scholar
3. Moritomo, Y., Asamilsu, A., Kuwahara, H. and Tokura, Y., Nature 380, 141 (1996).Google Scholar
4. Seshadri, R., Martin, C., Maignan, A., Hervieu, M., Raveau, B. and Ramachandra Rao, C.N., J. Mater. Chem. 6, 1585 (1996).Google Scholar
5. Mitchell, J.F., Argyriou, D.N., Jorgensen, J.D., Hinks, D.G., Potter, C.D. and Bader, S.D. Phys. Rev. B., in press.Google Scholar
6. Potter, C.D., Swiatek, M., Argyriou, D.N., Mitchell, J.F., Hinks, D.G., Jorgensen, J.D. and Bader, S.D., submitted to Phys. Rev. Lett.Google Scholar
7. Argyriou, D.N., Potter, C.D., Mitchell, J.F., Jorgensen, J.D., Kleb, R. and Bader, S.D., submitted to Phys. Rev. Lett.Google Scholar
8. Caignaert, V., Suard, E., Maignan, A., Simon, C. and Raveau, B., J. Magn. Magn. Mater. 153, L260(1996).Google Scholar