EXAFS study of mixed nickel molybdenum oxide thin films at the Ni and Mo K-edges

J. Gaidelene; R. Kalendarev; A. Kuzmin; J. Purans

doi:10.1016/j.nima.2004.06.023

EXAFS study of mixed nickel molybdenum oxide thin films at the Ni and Mo K-edges

J. Gaidelene
, R. Kalendarev
, A. Kuzmin^*
, J. Purans

^*Šī darba korespondējošais autors

University of Latvia

Zinātniskās darbības rezultāts: Devums žurnālam › Konferences zinātniskais raksts › koleģiāli recenzēts

7 Atsauces (Scopus)

Kopsavilkums

Mixed nickel molybdenum oxide thin films were produced by DC magnetron co-sputtering technique with the nickel content about 8, 16 and 25at%. X-ray absorption spectroscopy at the Ni and Mo K-edges was used to study the local atomic structure in the films. The best-fit analysis of the EXAFS signals suggests that (i) the films are amorphous, except for the highest nickel content (25at%), at which a segregation of NiO phase was observed; (ii) nickel and molybdenum atoms are octahedrally coordinated by oxygen atoms. Opposite to the NiO₆ octahedra, the MoO₆ octahedra are strongly distorted, that results in an existence of two groups of oxygen atoms - four nearest at ∼1.76Å and two distant at ∼2.2Å. It was also found that the MoO₆ octahedra are joined by edges, with the Mo-Mo distance about 3.26-3.31Å.

Oriģinālvaloda	Angļu
Lapas (no-līdz)	321-326
Lapu skaits	6
Žurnāls	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Sējums	531
Izdevuma numurs	1-2
DOIs	https://doi.org/10.1016/j.nima.2004.06.023
Publikācijas statuss	Publicēts - 21 sept. 2004
Pasākums	Proceedings of the 5th International Worshop on Radiation - Riga, Latvija Ilgums: 7 sept. 2003 → 11 sept. 2003

Piekļuve Dokumentiem

10.1016/j.nima.2004.06.023

Citi faili un saites

Saite uz publikāciju Scopus

Citēt šo

@article{a7df4f9e41e34f6e996fe22ed410a2d6,

title = "EXAFS study of mixed nickel molybdenum oxide thin films at the Ni and Mo K-edges",

abstract = "Mixed nickel molybdenum oxide thin films were produced by DC magnetron co-sputtering technique with the nickel content about 8, 16 and 25at\%. X-ray absorption spectroscopy at the Ni and Mo K-edges was used to study the local atomic structure in the films. The best-fit analysis of the EXAFS signals suggests that (i) the films are amorphous, except for the highest nickel content (25at\%), at which a segregation of NiO phase was observed; (ii) nickel and molybdenum atoms are octahedrally coordinated by oxygen atoms. Opposite to the NiO6 octahedra, the MoO6 octahedra are strongly distorted, that results in an existence of two groups of oxygen atoms - four nearest at ∼1.76{\AA} and two distant at ∼2.2{\AA}. It was also found that the MoO6 octahedra are joined by edges, with the Mo-Mo distance about 3.26-3.31{\AA}.",

keywords = "EXAFS, Mo K-edge, Ni K-edge, Nickel molybdenum oxide thin film",

author = "J. Gaidelene and R. Kalendarev and A. Kuzmin and J. Purans",

year = "2004",

month = sep,

day = "21",

doi = "10.1016/j.nima.2004.06.023",

language = "English",

volume = "531",

pages = "321--326",

journal = "Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",

issn = "0168-9002",

publisher = "Elsevier B.V.",

number = "1-2",

note = "Proceedings of the 5th International Worshop on Radiation ; Conference date: 07-09-2003 Through 11-09-2003",

}

EXAFS study of mixed nickel molybdenum oxide thin films at the Ni and Mo K-edges. / Gaidelene, J.; Kalendarev, R.; Kuzmin, A. u.c.
(gadā): Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Sēj. 531, Nr. 1-2, 21.09.2004, lpp. 321-326.

Zinātniskās darbības rezultāts: Devums žurnālam › Konferences zinātniskais raksts › koleģiāli recenzēts

TY - JOUR

T1 - EXAFS study of mixed nickel molybdenum oxide thin films at the Ni and Mo K-edges

AU - Gaidelene, J.

AU - Kalendarev, R.

AU - Kuzmin, A.

AU - Purans, J.

PY - 2004/9/21

Y1 - 2004/9/21

N2 - Mixed nickel molybdenum oxide thin films were produced by DC magnetron co-sputtering technique with the nickel content about 8, 16 and 25at%. X-ray absorption spectroscopy at the Ni and Mo K-edges was used to study the local atomic structure in the films. The best-fit analysis of the EXAFS signals suggests that (i) the films are amorphous, except for the highest nickel content (25at%), at which a segregation of NiO phase was observed; (ii) nickel and molybdenum atoms are octahedrally coordinated by oxygen atoms. Opposite to the NiO6 octahedra, the MoO6 octahedra are strongly distorted, that results in an existence of two groups of oxygen atoms - four nearest at ∼1.76Å and two distant at ∼2.2Å. It was also found that the MoO6 octahedra are joined by edges, with the Mo-Mo distance about 3.26-3.31Å.

AB - Mixed nickel molybdenum oxide thin films were produced by DC magnetron co-sputtering technique with the nickel content about 8, 16 and 25at%. X-ray absorption spectroscopy at the Ni and Mo K-edges was used to study the local atomic structure in the films. The best-fit analysis of the EXAFS signals suggests that (i) the films are amorphous, except for the highest nickel content (25at%), at which a segregation of NiO phase was observed; (ii) nickel and molybdenum atoms are octahedrally coordinated by oxygen atoms. Opposite to the NiO6 octahedra, the MoO6 octahedra are strongly distorted, that results in an existence of two groups of oxygen atoms - four nearest at ∼1.76Å and two distant at ∼2.2Å. It was also found that the MoO6 octahedra are joined by edges, with the Mo-Mo distance about 3.26-3.31Å.

KW - EXAFS

KW - Mo K-edge

KW - Ni K-edge

KW - Nickel molybdenum oxide thin film

UR - https://www.scopus.com/pages/publications/4544327119

U2 - 10.1016/j.nima.2004.06.023

DO - 10.1016/j.nima.2004.06.023

M3 - Conference article

AN - SCOPUS:4544327119

SN - 0168-9002

VL - 531

SP - 321

EP - 326

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

IS - 1-2

T2 - Proceedings of the 5th International Worshop on Radiation

Y2 - 7 September 2003 through 11 September 2003

ER -

EXAFS study of mixed nickel molybdenum oxide thin films at the Ni and Mo K-edges

Kopsavilkums

Piekļuve Dokumentiem

Citi faili un saites

Nospiedums

Citēt šo