Influence of oxygen isotope exchange on the ground state of manganites

V. N. Smolyaninova, Amlan Biswas, P. Fournier, S. Lofland, X. Zhang, Guo Meng Zhao, R. L. Greene

Research output: Contribution to journalArticle

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Abstract

We report a study of oxygen isotope effects on the low-temperature specific heat, magnetization, and resistivity of La1-xCaxMnO3 and (La1-yPry)0.67Ca0.33 MnO3. For metallic compositions of La1-xCaxMnO3 and for charge-ordered La0.5Ca0.5MnO3 no change in the low-temperature specific heat has been detected with 16O-18O exchange, while compounds of (La1-yPry)0.67Ca0.33 MnO3 (0.4<y<0.6) show a significant change in low-temperature properties. The low-temperature specific heat indicates the presence of a charge-ordered phase even in compositions of (La1-yPry)0.67Ca0.33 MnO3 which are metallic at low temperatures. We suggest that the changes induced by the oxygen isotope exchange are caused by an increase of the charge-ordered phase in 18O samples.

Original languageEnglish (US)
Article number104419
Pages (from-to)1044191-1044199
Number of pages9
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume65
Issue number10
StatePublished - Mar 1 2002

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Oxygen Isotopes
Manganites
oxygen isotopes
Ground state
Isotopes
Specific heat
Oxygen
ground state
specific heat
Low temperature properties
Temperature
Chemical analysis
Magnetization
isotope effect
magnetization
electrical resistivity

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Smolyaninova, V. N., Biswas, A., Fournier, P., Lofland, S., Zhang, X., Zhao, G. M., & Greene, R. L. (2002). Influence of oxygen isotope exchange on the ground state of manganites. Physical Review B - Condensed Matter and Materials Physics, 65(10), 1044191-1044199. [104419].
Smolyaninova, V. N. ; Biswas, Amlan ; Fournier, P. ; Lofland, S. ; Zhang, X. ; Zhao, Guo Meng ; Greene, R. L. / Influence of oxygen isotope exchange on the ground state of manganites. In: Physical Review B - Condensed Matter and Materials Physics. 2002 ; Vol. 65, No. 10. pp. 1044191-1044199.
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Smolyaninova, VN, Biswas, A, Fournier, P, Lofland, S, Zhang, X, Zhao, GM & Greene, RL 2002, 'Influence of oxygen isotope exchange on the ground state of manganites', Physical Review B - Condensed Matter and Materials Physics, vol. 65, no. 10, 104419, pp. 1044191-1044199.

Influence of oxygen isotope exchange on the ground state of manganites. / Smolyaninova, V. N.; Biswas, Amlan; Fournier, P.; Lofland, S.; Zhang, X.; Zhao, Guo Meng; Greene, R. L.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 65, No. 10, 104419, 01.03.2002, p. 1044191-1044199.

Research output: Contribution to journalArticle

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AU - Biswas, Amlan

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AU - Zhao, Guo Meng

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Smolyaninova VN, Biswas A, Fournier P, Lofland S, Zhang X, Zhao GM et al. Influence of oxygen isotope exchange on the ground state of manganites. Physical Review B - Condensed Matter and Materials Physics. 2002 Mar 1;65(10):1044191-1044199. 104419.