Phonon scattering and stability of Na0.5CoO2

X. N. Zhang; P. Lemmens; V. Gnezdilov; K. Y. Choi; B. Keimer; D. P. Chen; C. T. Lin; F. C. Chou

doi:10.1016/j.physb.2005.01.085

Phonon scattering and stability of Na_0.5CoO₂

X. N. Zhang, P. Lemmens, V. Gnezdilov, K. Y. Choi, B. Keimer, D. P. Chen, C. T. Lin, F. C. Chou

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Raman scattering experiments have been performed on NaxCoO2 as a function of temperature at the composition x=0.5 where a structural instability and a metal-insulator transition have been observed. Three additional phonon modes are observed compared to samples with larger x. An in situ annealing study (Tmax=550K) with the initial presence of water vapor at ambient conditions reveals an irreversible structural instability of this composition.

Original language	English
Pages (from-to)	424-426
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	359-361
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physb.2005.01.085
State	Published - 30 Apr 2005
Externally published	Yes

Keywords

Charge ordering
Cobaltates
Raman scattering

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10.1016/j.physb.2005.01.085

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title = "Phonon scattering and stability of Na0.5CoO2",

abstract = "Raman scattering experiments have been performed on NaxCoO2 as a function of temperature at the composition x=0.5 where a structural instability and a metal-insulator transition have been observed. Three additional phonon modes are observed compared to samples with larger x. An in situ annealing study (Tmax=550K) with the initial presence of water vapor at ambient conditions reveals an irreversible structural instability of this composition.",

keywords = "Charge ordering, Cobaltates, Raman scattering",

author = "Zhang, \{X. N.\} and P. Lemmens and V. Gnezdilov and Choi, \{K. Y.\} and B. Keimer and Chen, \{D. P.\} and Lin, \{C. T.\} and Chou, \{F. C.\}",

year = "2005",

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doi = "10.1016/j.physb.2005.01.085",

language = "English",

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pages = "424--426",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Phonon scattering and stability of Na0.5CoO2

AU - Zhang, X. N.

AU - Lemmens, P.

AU - Gnezdilov, V.

AU - Choi, K. Y.

AU - Keimer, B.

AU - Chen, D. P.

AU - Lin, C. T.

AU - Chou, F. C.

PY - 2005/4/30

Y1 - 2005/4/30

N2 - Raman scattering experiments have been performed on NaxCoO2 as a function of temperature at the composition x=0.5 where a structural instability and a metal-insulator transition have been observed. Three additional phonon modes are observed compared to samples with larger x. An in situ annealing study (Tmax=550K) with the initial presence of water vapor at ambient conditions reveals an irreversible structural instability of this composition.

AB - Raman scattering experiments have been performed on NaxCoO2 as a function of temperature at the composition x=0.5 where a structural instability and a metal-insulator transition have been observed. Three additional phonon modes are observed compared to samples with larger x. An in situ annealing study (Tmax=550K) with the initial presence of water vapor at ambient conditions reveals an irreversible structural instability of this composition.

KW - Charge ordering

KW - Cobaltates

KW - Raman scattering

UR - https://www.scopus.com/pages/publications/18144376643

U2 - 10.1016/j.physb.2005.01.085

DO - 10.1016/j.physb.2005.01.085

M3 - Article

AN - SCOPUS:18144376643

SN - 0921-4526

VL - 359-361

SP - 424

EP - 426

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - SPEC. ISS.

ER -

Phonon scattering and stability of Na_0.5CoO₂

Abstract

Keywords

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