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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)

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