Structural and magnetic characterisation of Ce@C82

Christopher John Nuttall; Yasuhira Inada; Yoshihiro Watanabe; Kiyoe Nagai; Tsunehiro Muro; Dam Hieu Chi; Taishi Takenobu; Yoshihiro Iwasa; Koichi Kikuchi

doi:10.1080/10587250008025538

Structural and magnetic characterisation of Ce@C₈₂

Christopher John Nuttall, Yasuhira Inada, Yoshihiro Watanabe, Kiyoe Nagai, Tsunehiro Muro, Dam Hieu Chi, Taishi Takenobu, Yoshihiro Iwasa, Koichi Kikuchi

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

16 Citations (Scopus)

Abstract

We report the structural and magnetic properties of the endohedral metallofullerene Ce@C82. A hexagonal close packing phase [P6₃/mmc [a=lI.1544Å, c=18.2256Å] is formed exclusively after vacuum annealing of the solvent precipitated compound. In contrast, sublimed Ce@C₈₂ was found to be dominantly face-centred cubic close packed [Fm-3m; a=15.766Å]. X-ray powder profile calculations revealed that the endohedral cerium atom lies close to 1.8Å from the C₈₂ cage centre in both phases. Hexagonal Ce@C82 has been investigated by magnetic susceptibility measurements. Paramagnetic behaviour is maintained down to 2K attributable to Ce³⁺ ions. Towards lower temperatures, the observed paramagnetic moment falls from the free ion Ce³⁺(neff =2.54μ8) value, monotonically approaching IpB at 2K.

Original language	English
Pages (from-to)	635-638
Number of pages	4
Journal	Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume	340
DOIs	https://doi.org/10.1080/10587250008025538
Publication status	Published - 2000
Externally published	Yes

Keywords

Ce@c82
Endohedral metallofullerene
Magnetism
Polymorphism

ASJC Scopus subject areas

Condensed Matter Physics

Access to Document

10.1080/10587250008025538

Cite this

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title = "Structural and magnetic characterisation of Ce@C82",

abstract = "We report the structural and magnetic properties of the endohedral metallofullerene Ce@C82. A hexagonal close packing phase [P63/mmc [a=lI.1544{\AA}, c=18.2256{\AA}] is formed exclusively after vacuum annealing of the solvent precipitated compound. In contrast, sublimed Ce@C82 was found to be dominantly face-centred cubic close packed [Fm-3m; a=15.766{\AA}]. X-ray powder profile calculations revealed that the endohedral cerium atom lies close to 1.8{\AA} from the C82 cage centre in both phases. Hexagonal Ce@C82 has been investigated by magnetic susceptibility measurements. Paramagnetic behaviour is maintained down to 2K attributable to Ce3+ ions. Towards lower temperatures, the observed paramagnetic moment falls from the free ion Ce3+(neff =2.54μ8) value, monotonically approaching IpB at 2K.",

keywords = "Ce@c82, Endohedral metallofullerene, Magnetism, Polymorphism",

author = "Nuttall, {Christopher John} and Yasuhira Inada and Yoshihiro Watanabe and Kiyoe Nagai and Tsunehiro Muro and Chi, {Dam Hieu} and Taishi Takenobu and Yoshihiro Iwasa and Koichi Kikuchi",

year = "2000",

doi = "10.1080/10587250008025538",

language = "English",

volume = "340",

pages = "635--638",

journal = "Molecular Crystals and Liquid Crystals",

issn = "1542-1406",

publisher = "Taylor and Francis Ltd.",

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TY - JOUR

T1 - Structural and magnetic characterisation of Ce@C82

AU - Nuttall, Christopher John

AU - Inada, Yasuhira

AU - Watanabe, Yoshihiro

AU - Nagai, Kiyoe

AU - Muro, Tsunehiro

AU - Chi, Dam Hieu

AU - Takenobu, Taishi

AU - Iwasa, Yoshihiro

AU - Kikuchi, Koichi

PY - 2000

Y1 - 2000

N2 - We report the structural and magnetic properties of the endohedral metallofullerene Ce@C82. A hexagonal close packing phase [P63/mmc [a=lI.1544Å, c=18.2256Å] is formed exclusively after vacuum annealing of the solvent precipitated compound. In contrast, sublimed Ce@C82 was found to be dominantly face-centred cubic close packed [Fm-3m; a=15.766Å]. X-ray powder profile calculations revealed that the endohedral cerium atom lies close to 1.8Å from the C82 cage centre in both phases. Hexagonal Ce@C82 has been investigated by magnetic susceptibility measurements. Paramagnetic behaviour is maintained down to 2K attributable to Ce3+ ions. Towards lower temperatures, the observed paramagnetic moment falls from the free ion Ce3+(neff =2.54μ8) value, monotonically approaching IpB at 2K.

AB - We report the structural and magnetic properties of the endohedral metallofullerene Ce@C82. A hexagonal close packing phase [P63/mmc [a=lI.1544Å, c=18.2256Å] is formed exclusively after vacuum annealing of the solvent precipitated compound. In contrast, sublimed Ce@C82 was found to be dominantly face-centred cubic close packed [Fm-3m; a=15.766Å]. X-ray powder profile calculations revealed that the endohedral cerium atom lies close to 1.8Å from the C82 cage centre in both phases. Hexagonal Ce@C82 has been investigated by magnetic susceptibility measurements. Paramagnetic behaviour is maintained down to 2K attributable to Ce3+ ions. Towards lower temperatures, the observed paramagnetic moment falls from the free ion Ce3+(neff =2.54μ8) value, monotonically approaching IpB at 2K.

KW - Ce@c82

KW - Endohedral metallofullerene

KW - Magnetism

KW - Polymorphism

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SN - 1542-1406

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JO - Molecular Crystals and Liquid Crystals

JF - Molecular Crystals and Liquid Crystals

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