Zobrazeno 1 - 10
of 80
pro vyhledávání: '"M. Stingaciu"'
Publikováno v:
Journal of physics. Condensed matter : an Institute of Physics journal. 17(37)
Both differential scanning calorimetry and powder neutron diffraction have been applied to investigate an oxygen isotope effect on the metal-insulator (MI) transition in layered cobaltites RBaCo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::84014a50818541c6a2358e0893487447
https://pubmed.ncbi.nlm.nih.gov/32397050
https://pubmed.ncbi.nlm.nih.gov/32397050
Autor:
M. Stingaciu, Siddharth S. Saxena, Gérard Hamel, M. E. Zayed, M. Jiménez–Ruiz, Ekaterina Pomjakushina, Martin Boehm, A. Schneidewind, Stefan Klotz, Andreas M. Läuchli, Ch. Rüegg, Vladimir Pomjakushin, Kazimierz Conder, M. Ellerby, Ravil A. Sadykov, Christos Panagopoulos, D. F. McMorrow, Henrik M. Rønnow, Th. Strässle, J. Larrea J.
Publikováno v:
Nature Physics. 13:962-966
A detailed neutron scattering study of the Shastry–Sutherland material SrCu2(BO3)2 verifies the existence of a 4-spin plaquette singlet phase in this system.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2b91ac3fdce15c38e50db686a24b560
https://doi.org/10.1038/nphys4190
https://doi.org/10.1038/nphys4190
Publikováno v:
Materials Research Bulletin. 43:1195-1202
A novel mathematical approach for defect concentration calculations proposed by Poulsen [F.W. Poulsen, Solid State Ionics, 129 (2000) 145] for oxides with rather small deviations from stoichiometry also applies to perovskite-type oxides with large ra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da194b836b810791de728c6c330d59d4
https://doi.org/10.1016/j.materresbull.2007.05.033
https://doi.org/10.1016/j.materresbull.2007.05.033
Publikováno v:
Journal of Crystal Growth. 310:1239-1244
We report on a crystal growth by the travelling solvent floating zone method and characterization of the layered perovskite Tb 0.9 Dy 0.1 BaCo 2 O 5+ δ . The crystal was grown with a rate of 0.5 mm/h in a gas mixture of 2% O 2 in Ar. X-ray diffracti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de0c56e026a3c12e3c1765ee25a24eae
https://doi.org/10.1016/j.jcrysgro.2007.12.036
https://doi.org/10.1016/j.jcrysgro.2007.12.036
Publikováno v:
ResearcherID
Complex cobalt oxide perovskite-derived compounds with a general formula LnBaCo2O5+x (Ln = rare earth) attracted considerable interests because of their interesting properties: magnetic and metal–insulator transitions, giant magnetoresistance, ioni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f522046b9a39905656415c8c9706c44a
https://doi.org/10.12693/aphyspola.111.7
https://doi.org/10.12693/aphyspola.111.7
Autor:
Ekaterina Pomjakushina, Andrey Podlesnyak, Kazimierz Conder, S. Streule, Vladimir Pomjakushin, M. Stingaciu
Publikováno v:
Journal of Physics: Condensed Matter. 17:5813-5820
Both differential scanning calorimetry and powder neutron diffraction have been applied to investigate an oxygen isotope effect on the metal–insulator (MI) transition in layered cobaltites RBaCo2O5.5 (R = Pr, Dy, Ho and Y). For all the compounds it
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a89d1e7d3d7d9806c042babd00da7e5d
https://doi.org/10.1088/0953-8984/17/37/016
https://doi.org/10.1088/0953-8984/17/37/016
Autor:
Kazimierz Conder, Henrik M. Rønnow, M. Ay, Uwe Stuhr, M. E. Zayed, Th. Strässle, Joël Mesot, P. Link, B. Roessli, Ekaterina Pomjakushina, Ch. Rüegg, M. Stingaciu
Publikováno v:
Physical Review Letters. 113
The temperature dependence of the gapped triplet excitations (triplons) in the 2D Shastry-Sutherland quantum magnet SrCu2(BO3)(2) is studied by means of inelastic neutron scattering. The excitation amplitude rapidly decreases as a function of tempera
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6b0fe1b30b7ce98e319cf60064a4e33
https://doi.org/10.1103/physrevlett.113.067201
https://doi.org/10.1103/physrevlett.113.067201
Autor:
P. Allenspach, M. Stingaciu, Ekaterina Pomjakushina, A. E. Karkin, Andrey Podlesnyak, Kazimierz Conder
Publikováno v:
Journal of Magnetism and Magnetic Materials. 316:e710-e712
We present the results of the magnetic and electric transport measurements of TbBaCo 2 O 5.5 single crystal in external magnetic fields. The measurements reveal five phase transitions: metal–insulator (MI), ferro- or ferrimagnetic (FM), antiferroma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87f1e324ad17de81d55711682cb54830
https://doi.org/10.1016/j.jmmm.2007.03.068
https://doi.org/10.1016/j.jmmm.2007.03.068
Autor:
Yu. G. Pashkevich, K. Conder, M. Stingaciu, E. Pomjakushina, Hans-Henning Klauss, Hubertus Luetkens, Peter Lemmens
Publikováno v:
Journal of Magnetism and Magnetic Materials. 310:1566-1568
Zero-field muon spin rotation ( ZF – μ SR ) and DC magnetization investigations have been performed on the antiferromagnetic-ferromagnetic (AFM–FM) and the ferromagnetic-paramagnetic (FM–PM) transitions of two oxygen isotope ( 16 O or 18 O) su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33dd79767f2f852949e95f924f85eaea
https://doi.org/10.1016/j.jmmm.2006.10.596
https://doi.org/10.1016/j.jmmm.2006.10.596
Autor:
M. Stingaciu, Ekaterina Pomjakushina, A. E. Karkin, Vladimir Pomjakushin, Andrey Podlesnyak, Kazimierz Conder
Publikováno v:
Journal of Magnetism and Magnetic Materials. 310:907-909
In the RBaCo 2 O 5+ x (R=rare earth) structure cobalt cations exist in two coordination environments—pyramidal CoO 5 (Co2) and octahedral CoO 6 (Co1). In compounds with x ≈0.5 a metal–insulator (MI) transition is observed. We have found that th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08e3ea71055e525c762c77b82e0d51fb
https://doi.org/10.1016/j.jmmm.2006.10.487
https://doi.org/10.1016/j.jmmm.2006.10.487