Face centered cubic cobalt layer on Au(111): a magneto-optical study

Ayadi, Mohamed; Belhi, R.; Mliki, N.; Abdelmoula, K.; Ferré, J.; Jamet, J. P.

doi:10.1016/s0304-8853(02)00183-x

Cited by 20 publications

(11 citation statements)

References 17 publications

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“…While alloy formation can occur at the interface between gold and cobalt, this has only been seen to occur during annealing treatments above 600 K [22,23]. Below this temperature, Co has been shown to grow with a strong face centred cubic (fcc) structure with the {111} axis parallel with the gold {111} axis, without alloying [24][25][26][27], as was undertaken here for our cobalt depositions on gold.…”

Section: Experiments and Theorymentioning

confidence: 99%

Orientation and bonding of biphenyldimethyldithiol

Caruso¹,

Rajesh²,

Gallup³

et al. 2004

J. Phys.: Condens. Matter

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Abstract:The molecular orbitals of 1, 1′-biphenyl-4,4′-dimethyldithiol (HS-CH 2 -C 6 H 4 -C 6 H 4 -CH 2 -SH) are identified from combined photoemission and inverse photoemission studies and compared with theory for several different surfaces, molecular conformations and molecular orientations. The preferential molecular orientations of biphenyldimethyldithiol, on both Au(111) and polycrystalline Co, are identified from polarization resolved photoemission studies. Two different molecular orientations are adopted by biphenyldimethyldithiol on gold depending on adsorption conditions. Biphenyldimethyldithiol is observed to bond more strongly to cobalt than gold surfaces.

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Section: Experiments and Theorymentioning

confidence: 99%

Orientation and bonding of biphenyldimethyldithiol

Caruso¹,

Rajesh²,

Gallup³

et al. 2004

J. Phys.: Condens. Matter

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“…Co particles are model experimental systems for studying magnetoresistance 1 and magnetic anisotropy. 15 Interest in the SrTiO 3 surface has emerged from its electronic properties 16 and its use as a substrate for supported nanocrystal growth. The Co natural bulk structure is hexagonal close packed, 5-8 but Co can grow epitaxially in the form of metastable body-centered-cubic ͑bcc͒, 9,10 face-centeredcubic ͑fcc͒, [6][7][8][11][12][13] or face-cenetred-tetragonal 14 thin films.…”

mentioning

confidence: 99%

Self-assembled supported Co nanocrystals: The adhesion energy of face-centered-cubic Co on SrTiO3(001)-(2×2)

Silly

Castell

2005

Applied Physics Letters

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We have investigated the structure and morphology of self-assembled cobalt nanocrystals supported on a SrTiO3(001)-(2×2) substrate using scanning tunneling microscopy. Nanocrystals with a truncated pyramid shape were imaged, allowing crystallographic identification of the cluster facets. These nanocrystals result from the epitaxial growth of fcc Co on SrTiO3(001). The dimension of the nanocrystal facets at equilibrium and an energy minimization calculation result in γadh=(3.96±0.37)J∕m2 for the adhesion energy of face-centered-cubic Co∕SrTiO3(001)-(2×2).

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“…However, it was demonstrated that, under special preparation conditions, the Co layer can grow epitaxially on the Au(111) surface with the fcc structure [21-23]. Tonner et al added more confusion to the issue by demonstrating that the occurrence of a particular structure depends on the thickness of deposited films.…”

Section: Resultsmentioning

confidence: 99%

“…In order to ascribe a specific crystallographic structure to the Co-2 × 2 islands, we noted that the equilibrium phase for bulk Co is hcp at RT, and the Co layers generally adopt this structure when grown on metallic surfaces [ 19 , 20 ]. However, it was demonstrated that, under special preparation conditions, the Co layer can grow epitaxially on the Au(111) surface with the fcc structure [ 21 - 23 ]. Tonner et al added more confusion to the issue by demonstrating that the occurrence of a particular structure depends on the thickness of deposited films.…”

Section: Resultsmentioning

confidence: 99%

Structure of Co-2 × 2 nanoislands grown on Ag/Ge(111)-√3 × √3 surface studied by scanning tunneling microscopy

et al. 2012

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We have found that Co-2 × 2 islands grown on an Ag/Ge(111)-√3 × √3 surface have hcp structure with the (11-20) orientation. The island evolution involves transformation of the unit cell shape from parallelogram into rectangular, which is accompanied by the island shape transformation from hexagonal into stripe-like. Identified are two crystallographic directions for the island growth, the pseudo-[0001] and the pseudo-[1-100]. We have observed the occurrence of a lateral shift between the topmost and the underlying bilayers in the case of the island growth along the pseudo-[0001] direction. In contrast, the topmost and the underlying bilayers are unshifted for the growth along the pseudo-[1-100] direction.

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Face centered cubic cobalt layer on Au(111): a magneto-optical study

Cited by 20 publications

References 17 publications

Orientation and bonding of biphenyldimethyldithiol

Orientation and bonding of biphenyldimethyldithiol

Self-assembled supported Co nanocrystals: The adhesion energy of face-centered-cubic Co on SrTiO3(001)-(2×2)

Structure of Co-2 × 2 nanoislands grown on Ag/Ge(111)-√3 × √3 surface studied by scanning tunneling microscopy

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