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Valence State Mixing and Separation in SmBaFe<SUB>2</SUB>O<SUB>5+w</SUB>

Lindén, Johan; Karen, Pavel; Kjekshus, Arne; Miettinen, J.; Pietari, T.; Karppinen, Maarit (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1999)

A mixed-valence state, formally denoted as Fe 2 . 5 + , is observed in the 300 K Mössbauer spectra of the most reduced samples of SmBaFe 2 O 5 + w . Upon cooling below the Verwey-type transition temperature (TV≈ 200 K ) ...

Molecular structure and pseudorotation in 3,3-dimethyl-3-silatetrahydro- thiophene from a joint gas-phase electron diffraction and ab initio molecular orbital study

Samdal, Svein; Borisenko, Konstantin B.; Suslova, Elena N.; Sipachev, Victor A.; Shishkov, Igor F.; Vilkov, Lev V. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1998)

Intramolecular motion and molecular structure of N-nitropyrrolidine: A gas-phase electron diffraction and ab initio molecular orbital study.

Borisenko, K. B.; Samdal, Svein; Shishkov, I. F.; Vilkov, L. V. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1998)

Structural and conformational properties of metoxyacetamide as studied by microwave spectroscopy and ab initio computations.

Marstokk, K.-M.; Møllendal, H.; Samdal, Svein (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1996)

Neutron-powder-diffraction study of the nuclear and magnetic structures of the substitution compound (Y1−xCax)Ba2Fe3O8+d (x = 0.05, 0.10 and 0.20)

Natali-Sora, I.; Huang, Q.; Lynn, J.W.; Rosov, N.; Karen, Pavel; Kjekshus, Arne; Karen, V.L.; Mighell, A.D.; Santoro, A. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1994)

The nuclear and magnetic structures of ( Y 1 − x Ca x ) Ba 2 Fe 3 O 8 + δ with x=0.05, 0.10, and 0.20 have been investigated by neutron-powder diffraction at room temperature. The compound crystallizes with the symmetry ...

Crystal structure of ScCl3

Fjellvåg, Helmer; Karen, Pavel (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1994)

Raman scattering from YBa2Fe3O8+d

Atanassova, Y.K.; Hadijev, V.G.; Karen, Pavel; Kjekshus, Arne (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1994)

The results of polarized micro-Raman scattering experiments on YBa 2 Fe 3 O 8 + δ with δ=0.1 are reported. We identified seven out of the total ten by symmetry Raman-allowed phonons at 134 cm − 1 ( A 1 g ), 148 cm − 1 ...

Magnetic properties of YBaCuCoO5

Karen, Pavel; Kjekshus, Arne (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1993)

Superconducting and structural properties of Sr-substituted YBa2Cu4O8

Karen, Pavel; Kjekshus, Arne; Andresen, P.H. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1992)

Neutron-powder-diffraction study of the nuclear and magnetic structures of YBa2Fe3O8 at room temperature

Huang, Q.; Karen, Pavel; Karen, V.L.; Kjekshus, Arne; Lynn, J.W.; Mighell, A.D.; Rosov, N.; Santoro, A. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1992)

The nuclear and magnetic structures of YBa 2 Fe 3 O 8 have been investigated by powder neutron diffraction at room temperature. The nuclear structure of the compound has the symmetry of space group P4/mmm and lattice ...

Chemical phase diagrams for the YBa2Cu3O7 family

Karen, Pavel; Braaten, O.; Kjekshus, Arne (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1992)

The Molecular Structure of Ortho and Meta Iodonitrobenzene in the Gaseous State as Determined by the Electron-Diffraction Method. General Trends in the Bond Lengths and STO-3G* Ab Initio Calculations on Iodonitrobenzenes

Samdal, Svein; Vilkov, L. V.; Volden, H. V. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1992)

The Synthesis of Pure threo-1-Oxiranylethanol, and its Structure, Conformational Composition and Intramolecular Hydrogen Bonding as Studied by Microwave, Infrared and NMR Spectroscopy and Ab Initio Computations

Marstokk, K.-M.; Møllendal, Harald; Samdal, Svein; Stenstrøm, Yngve (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1992)

A convenient of synthesizing pure threo-1-oxiranylethanol is described. Its microwave spectrum has been investigated at the 6-31G* level. The NMR spectrum has been studied extensively for comparison of the conformations ...

On phase relations, structural and magnetic properties of the stable manganese carbides Mn23C6, Mn5C2 and Mn7C3

Karen, Pavel; Fjellvåg, Helmer; Kjekshus, Arne; Andresen, P.H. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1991)

Substitution for copper in YBa2Cu3O9−d by 3d- and pre-transition metals

Andresen, P.H.; Fjellvåg, Helmer; Karen, Pavel; Kjekshus, Arne (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1991)

The Structure of Gaseous Cyclopropanecarboxylic Acid as Studied by Microwave Spectroscopy, Electron Diffraction and Ab Initio Calculations

Marstokk, K.-M.; Møllendal, H.; Samdal, Svein (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1991)

Lanthanide substitution in YBa2Cu3O9−d

Karen, Pavel; Fjellvåg, Helmer; Braaten, O.; Kjekshus, Arne; Bratsberg, H. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1990)

The Molecular Structure of Iodobenzene and p-Iodonitro-benzene in the Gaseous State

Brunvoll, J.; Samdal, Svein; Thomasen, H.; Vilkov, L. V.; Volden, H. V. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1990)

Microwave Spectrum, Conformation and Intramolecular Hydrogen Bonding of 1-Mercapto-2-propanol

Marstokk, K.-M.; Møllendal, H.; Samdal, Svein (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1990)

Structure and Barrier of Internal Rotation of Biphenyl Derivatives in the Gaseous State. Part 5. A Reinvestigation of the Molecular Structure and Internal Rotation of Perfluorobiphenyl

Bastiansen, O.; Gundersen, S.; Samdal, Svein (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1989)

The Structure of Gaseous 2-Azetidinone as Studied by Microwave Spectroscopy, Electron Diffraction and Ab Initio Calculations

Marstokk, K.-M.; Møllendal, H.; Samdal, Svein; Uggerud, E. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1989)

Structure and Barrier of Internal Rotation of Biphenyl Derivatives in the Gaseous State. Part 6. On the Molecular Structure and Internal Rotation of 2,2'-Biyridine

Almenningen, A.; Bastiansen, O.; Gundersen, S.; Samdal, Svein (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1989)

Carbonatization of YBa2Cu3O6+x

Fjellvåg, Helmer; Karen, Pavel; Kjekshus, Arne; Kofstad, Per; Norby, Truls Eivind (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1988)

On the properties of the YBa8Cu4O12+η phase

Fjellvåg, Helmer; Karen, Pavel; Kjekshus, Arne; Grepstad, J.K. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1988)

Crystal structure of Y2Cu2O5 refined from powder neutron diffraction data

Fjellvåg, Helmer; Karen, Pavel; Kjekshus, Arne (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1988)

Lanthanum substitution in YBa2Cu3O9−d

Andresen, A.F.; Fjellvåg, Helmer; Karen, Pavel; Kjekshus, Arne (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1988)

The Molecular Structure and Tautomer Equilibrium of Gaseous 1,2,3-Triazole Studied by Microwave Spectroscopy, Electron Diffraction and Ab Initio Calculations

Bertrup, M.; Nielsen, C. J.; Nygaard, L.; Samdal, Svein; Sjøgren, C. E.; Sørensen, G. O. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1988)

The Molecular Structure of Gaseous Bismuth Trichloride Determined by Electron Diffraction

Haaland, A.; Hougen, J.; Samdal, Svein; Tremmel, J. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1988)

Structural properties and phase transitions of Y2BaCuO5 and YBa2Cu3O9−d

Fjellvåg, Helmer; Karen, Pavel; Kjekshus, Arne (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1987)

The molecular structures of dimethyl-, diethyl- and dipropylzinc determined by gas phase electron diffraction. Normal coordinate analysis and ab initio molecular orbital calculations on dimethylzinc

Almenningen, Arne; Helgaker, Trygve; Haaland, Arne; Samdal, Svein (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1982)

On the Structure of 2,2'-Bipyrimidine. Gas and Solid Phase Structure and Barrier to Internal Rotation

Fernholt, L.; Rømming, Chr.; Samdal, Svein (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1981)

On the Structure of 2,2'-Bipyrimidine. Gas and Solid Phase Structure and Barrier to Internal Rotation.

Fernholt, L.; Rømming, Chr.; Samdal, Svein (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1981)

On the Structure of Gaseous Methyl Vinyl Sulphide.

Samdal, Svein; Seip, H. M. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1971)

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