Structural distortions in the paramagnetic insulating phase of La0.7Ca0.3MnO3

C. S. Nelson; Y. J. Kim; J. P. Hill; Doon Gibbs; V. Kiryukhin; T. Y. Koo; S. W. Cheong

doi:10.1557/proc-678-ee7.3.1

Structural distortions in the paramagnetic insulating phase of La_0.7Ca_0.3MnO₃

C. S. Nelson, Y. J. Kim, J. P. Hill, Doon Gibbs, V. Kiryukhin, T. Y. Koo, S. W. Cheong

Research output: Contribution to journal › Conference article › peer-review

Abstract

We report x-ray scattering studies of polarons and tilt ordering in the high-temperature, paramagnetic insulating phase of La_0.7Ca_0.3MnO₃. The temperature dependence of scattering due to individual and correlated polarons was measured, and the latter was found to disappear at ∼400 K. The scattering due to tilt ordering, which was observed by tuning the incident photon energy near the La L₁ edge, was also measured as a function of temperature. The destruction of tilt ordering at ∼690 K is believed to be associated with the orthorhombic-rhombohedral structural transition.

Original language	English (US)
Pages (from-to)	EE7.3.1-EE7.3.8
Journal	Materials Research Society Symposium - Proceedings
Volume	678
DOIs	https://doi.org/10.1557/proc-678-ee7.3.1
State	Published - 2001
Externally published	Yes
Event	Applications of Synchrotron Radiation Techniques to Materials Science VI - San Francisco, CA, United States Duration: Apr 16 2001 → Apr 20 2001

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1557/proc-678-ee7.3.1

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@article{20a7bc5380204a15a251e3a0c7c33379,

title = "Structural distortions in the paramagnetic insulating phase of La0.7Ca0.3MnO3",

abstract = "We report x-ray scattering studies of polarons and tilt ordering in the high-temperature, paramagnetic insulating phase of La0.7Ca0.3MnO3. The temperature dependence of scattering due to individual and correlated polarons was measured, and the latter was found to disappear at ∼400 K. The scattering due to tilt ordering, which was observed by tuning the incident photon energy near the La L1 edge, was also measured as a function of temperature. The destruction of tilt ordering at ∼690 K is believed to be associated with the orthorhombic-rhombohedral structural transition.",

author = "Nelson, {C. S.} and Kim, {Y. J.} and Hill, {J. P.} and Doon Gibbs and V. Kiryukhin and Koo, {T. Y.} and Cheong, {S. W.}",

note = "Funding Information: The work at Brookhaven, both in the Physics Department and at the NSLS, was supported by the U.S. Department of Energy, Division of Materials Science, under Contract No. DE-AC02-98CH10886. The work at Rutgers University was supported, in part, by the MRSEC program of the NSF, Grant No. DMR-0080008.; Applications of Synchrotron Radiation Techniques to Materials Science VI ; Conference date: 16-04-2001 Through 20-04-2001",

year = "2001",

doi = "10.1557/proc-678-ee7.3.1",

language = "English (US)",

volume = "678",

pages = "EE7.3.1--EE7.3.8",

journal = "Materials Research Society Symposium - Proceedings",

issn = "0272-9172",

publisher = "Materials Research Society",

}

TY - JOUR

T1 - Structural distortions in the paramagnetic insulating phase of La0.7Ca0.3MnO3

AU - Nelson, C. S.

AU - Kim, Y. J.

AU - Hill, J. P.

AU - Gibbs, Doon

AU - Kiryukhin, V.

AU - Koo, T. Y.

AU - Cheong, S. W.

N1 - Funding Information: The work at Brookhaven, both in the Physics Department and at the NSLS, was supported by the U.S. Department of Energy, Division of Materials Science, under Contract No. DE-AC02-98CH10886. The work at Rutgers University was supported, in part, by the MRSEC program of the NSF, Grant No. DMR-0080008.

PY - 2001

Y1 - 2001

N2 - We report x-ray scattering studies of polarons and tilt ordering in the high-temperature, paramagnetic insulating phase of La0.7Ca0.3MnO3. The temperature dependence of scattering due to individual and correlated polarons was measured, and the latter was found to disappear at ∼400 K. The scattering due to tilt ordering, which was observed by tuning the incident photon energy near the La L1 edge, was also measured as a function of temperature. The destruction of tilt ordering at ∼690 K is believed to be associated with the orthorhombic-rhombohedral structural transition.

AB - We report x-ray scattering studies of polarons and tilt ordering in the high-temperature, paramagnetic insulating phase of La0.7Ca0.3MnO3. The temperature dependence of scattering due to individual and correlated polarons was measured, and the latter was found to disappear at ∼400 K. The scattering due to tilt ordering, which was observed by tuning the incident photon energy near the La L1 edge, was also measured as a function of temperature. The destruction of tilt ordering at ∼690 K is believed to be associated with the orthorhombic-rhombohedral structural transition.

UR - http://www.scopus.com/inward/record.url?scp=0035559634&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035559634&partnerID=8YFLogxK

U2 - 10.1557/proc-678-ee7.3.1

DO - 10.1557/proc-678-ee7.3.1

M3 - Conference article

AN - SCOPUS:0035559634

SN - 0272-9172

VL - 678

SP - EE7.3.1-EE7.3.8

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

T2 - Applications of Synchrotron Radiation Techniques to Materials Science VI

Y2 - 16 April 2001 through 20 April 2001

ER -

Structural distortions in the paramagnetic insulating phase of La_0.7Ca_0.3MnO₃

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