Incommensurate structures OsF6 and MoF6 graphite intercalates studied by neutron scattering

J. K. Kjems; D. Vaknin; D. Davidov; H. Selig; Y. Yeshurun

doi:10.1016/0379-6779(88)90470-5

Incommensurate structures OsF₆ and MoF₆ graphite intercalates studied by neutron scattering

J. K. Kjems, D. Vaknin, D. Davidov, H. Selig, Y. Yeshurun

Institute of Superconductivity Laboratory for Magnetic Measurements

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

3 Scopus citations

Abstract

Neutron scattering has been used to study the in-plane structure of stage-1 graphite intercalated C_8.4MoF₆ and C₉OsF₆. Both compounds exhibit a first order phase transition at 280K from a liquid to a modulated 2D incommensurate structure at low temperatures. The structure can be described as domain-wall modulated (2×2)Rα^o where α is a small rotation angle. In C_8.4MoF₆ the domain-wall lattice is correlated over 250Å which is close to the instrumental resolution, whereas for the C₉OsF₆ the correlation range is only 60Å. The relation between the residual resistivity and the intercalant structure is discussed.

Original language	English
Pages (from-to)	113-119
Number of pages	7
Journal	Synthetic Metals
Volume	23
Issue number	1-4
DOIs	https://doi.org/10.1016/0379-6779(88)90470-5
State	Published - Mar 1988

Bibliographical note

Funding Information:
This work was supported by U.S.-Israel Binational Foundation grant 84-00192. Support from the Danish National Science Research Council is acknowledged. We wish to thank Dr. A.W. Moore of Union Carbide for the HOPG.

Funding

This work was supported by U.S.-Israel Binational Foundation grant 84-00192. Support from the Danish National Science Research Council is acknowledged. We wish to thank Dr. A.W. Moore of Union Carbide for the HOPG.

Funders	Funder number
Danish National Science Research Council
U.S.-Israel Binational Foundation	84-00192

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10.1016/0379-6779(88)90470-5

Cite this

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title = "Incommensurate structures OsF6 and MoF6 graphite intercalates studied by neutron scattering",

abstract = "Neutron scattering has been used to study the in-plane structure of stage-1 graphite intercalated C8.4MoF6 and C9OsF6. Both compounds exhibit a first order phase transition at 280K from a liquid to a modulated 2D incommensurate structure at low temperatures. The structure can be described as domain-wall modulated (2×2)Rαo where α is a small rotation angle. In C8.4MoF6 the domain-wall lattice is correlated over 250{\AA} which is close to the instrumental resolution, whereas for the C9OsF6 the correlation range is only 60{\AA}. The relation between the residual resistivity and the intercalant structure is discussed.",

author = "Kjems, {J. K.} and D. Vaknin and D. Davidov and H. Selig and Y. Yeshurun",

note = "Funding Information: This work was supported by U.S.-Israel Binational Foundation grant 84-00192. Support from the Danish National Science Research Council is acknowledged. We wish to thank Dr. A.W. Moore of Union Carbide for the HOPG.",

year = "1988",

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T1 - Incommensurate structures OsF6 and MoF6 graphite intercalates studied by neutron scattering

AU - Kjems, J. K.

AU - Vaknin, D.

AU - Davidov, D.

AU - Selig, H.

AU - Yeshurun, Y.

N1 - Funding Information: This work was supported by U.S.-Israel Binational Foundation grant 84-00192. Support from the Danish National Science Research Council is acknowledged. We wish to thank Dr. A.W. Moore of Union Carbide for the HOPG.

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N2 - Neutron scattering has been used to study the in-plane structure of stage-1 graphite intercalated C8.4MoF6 and C9OsF6. Both compounds exhibit a first order phase transition at 280K from a liquid to a modulated 2D incommensurate structure at low temperatures. The structure can be described as domain-wall modulated (2×2)Rαo where α is a small rotation angle. In C8.4MoF6 the domain-wall lattice is correlated over 250Å which is close to the instrumental resolution, whereas for the C9OsF6 the correlation range is only 60Å. The relation between the residual resistivity and the intercalant structure is discussed.

AB - Neutron scattering has been used to study the in-plane structure of stage-1 graphite intercalated C8.4MoF6 and C9OsF6. Both compounds exhibit a first order phase transition at 280K from a liquid to a modulated 2D incommensurate structure at low temperatures. The structure can be described as domain-wall modulated (2×2)Rαo where α is a small rotation angle. In C8.4MoF6 the domain-wall lattice is correlated over 250Å which is close to the instrumental resolution, whereas for the C9OsF6 the correlation range is only 60Å. The relation between the residual resistivity and the intercalant structure is discussed.

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