Articles

Articles 25 records found  beginprevious14 - 23next  jump to record: Search took 0.00 seconds. 
14.
3 p, 1.1 MB Domain matching epitaxy of ferrimagnetic CoFe2O4 thin films on Sc2O3/Si(111) / Sánchez Barrera, Florencio (Institut de Ciència de Materials de Barcelona) ; Bachelet, Romain (Institut de Ciència de Materials de Barcelona) ; Coux, P. de (Centre national de la recherche scientifique (França). Centre d'élaboration de Matériaux et d'Études Structurales) ; Warot-Fonrose, Bénédicte (Centre national de la recherche scientifique (França). Centre d'élaboration de Matériaux et d'Études Structurales) ; Skumryev, Vassil (Universitat Autònoma de Barcelona. Departament de Física) ; Tarnawska, L. (Leibniz-Institut für innovative Mikroelektronik. Innovations for high performance) ; Zaumseil, P. (Leibniz-Institut für innovative Mikroelektronik. Innovations for high performance) ; Schroeder, T. (Leibniz-Institut für innovative Mikroelektronik. Innovations for high performance) ; Fontcuberta, Josep (Institut de Ciència de Materials de Barcelona) ; American Physical Society
Ferrimagnetic spinel CoFe2O4 (CFO) films are integrated with Si(111) using Sc2O3 buffer layers. The huge lattice mismatch (17%) between CFO and Sc2O3 is accommodated by domain matching, and CFO grows epitaxially with (111) out-of-plane orientation and coexistence of A- and B-type in-plane crystal variants. [...]
2011 - 10.1063/1.3663216
Applied physics letters, Vol. 99, Issue 21 (November 2011) , p. 211910/1-211910/3  
15.
10 p, 380.8 KB Calibration of low-temperature ac susceptometers with a copper cylinder standard / Chen, Du-Xing (Universitat Autònoma de Barcelona. Departament de Física) ; Skumryev, Vassil (Universitat Autònoma de Barcelona. Departament de Física)
A high-quality low-temperature ac susceptometer is calibrated by comparing the measured ac susceptibility of a copper cylinder with its eddy-current ac susceptibility accurately calculated. Different from conventional calibration techniques that compare the measured results with the known property of a standard sample at certain fixed temperature T, field amplitude Hm, and frequency f, to get a magnitude correction factor, here, the electromagnetic properties of the copper cylinder are unknown and are determined during the calibration of the ac susceptometer in the entire T, Hm, and f range. [...]
2010 - 10.1063/1.3309779
Review of scientific instruments, Vol. 81, Núm. 2 (Feb. 2010) , p. 025104/1-025104/10  
16.
9 p, 631.0 KB Calibration of ac and dc magnetometers with a Dy2O3 standard / Chen, Du-Xing (Universitat Autònoma de Barcelona. Departament de Física) ; Skumryev, Vassil (Universitat Autònoma de Barcelona. Departament de Física) ; Bozzo, Bernat (Institut de Ciència de Materials de Barcelona)
The ac susceptibility and magnetization curves of a glued Dy2O3 powder sample are measured by an ac susceptometer and a dc superconducting quantum interference device magnetometer, both of which have been calibrated previously. [...]
2011 - 10.1063/1.3581224
Review of scientific instruments, Vol. 82, Núm. 4 (April 2011) , p. 045112/1-045112/9  
17.
3 p, 985.5 KB CoFe2O4/buffer layer ultrathin heterostructures on Si(001) / Bachelet, Romain (Institut de Ciència de Materials de Barcelona) ; Coux, P. de (Centre national de la recherche scientifique (França). Centre d'élaboration de Matériaux et d'Études Structurales) ; Warot-Fonrose, Bénédicte (Centre national de la recherche scientifique (França). Centre d'élaboration de Matériaux et d'Études Structurales) ; Skumryev, Vassil (Universitat Autònoma de Barcelona. Departament de Física) ; Sánchez Barrera, Florencio (Institut de Ciència de Materials de Barcelona) ; Fontcuberta, Josep (Institut de Ciència de Materials de Barcelona)
Epitaxial films of ferromagnetic CoFe2O4 (CFO) were grown by pulsed laser deposition on Si(001) buffered with ultrathin yttria-stabilized zirconia (YSZ) layers in a single process. Reflection high-energy electron diffraction was used to monitor in real time the crystallization of YSZ, allowing the fabrication of epitaxial YSZ buffers with thickness of about 2 nm. [...]
2011 - 10.1063/1.3651386
Journal of applied physics, Vol. 110, Núm. 8 (Oct. 2011) , p. 086102/1-086102/3  
18.
4 p, 190.5 KB Why the iron magnetization in Gd2Fe14B and the spontaneous magnetization of Y2Fe14B depend on temperature differently / Kuz'min, N. D. (Institut für Festkörper- und Werkstofforschung Dresden) ; Givord, Dominique (Institut Néel (Grenoble, França)) ; Skumryev, Vassil (Universitat Autònoma de Barcelona. Departament de Física)
It is demonstrated that the temperature dependence of the iron sublattice magnetization in Gd2Fe14B is affected significantly by the Gd-Fe exchange interaction. This is at variance with the common perception that MFe(T) in iron-rich rare-earth intermetallics is determined predominantly by the Fe-Fe exchange. [...]
2010 - 10.1063/1.3443576
Journal of applied physics, Vol. 107, Núm. 11 (June 2010) , p. 113924/1-113924/4  
19.
7 p, 1.8 MB Strain-driven noncollinear magnetic ordering in orthorhombic epitaxial YMnO3 / Martí Rovirosa, Xavier (Institut de Ciència de Materials de Barcelona) ; Skumryev, Vassil (Universitat Autònoma de Barcelona. Departament de Física) ; Laukhin, Vladimir (Institut de Ciència de Materials de Barcelona) ; Bachelet, Romain (Institut de Ciència de Materials de Barcelona) ; Ferrater Martorell, Cèsar (Universitat de Barcelona. Departament de Física Aplicada i Òptica) ; García-Cuenca Varona, María Victoria (Universitat de Barcelona. Departament de Física Aplicada i Òptica) ; Varela Fernández, Manuel, 1956- (Universitat de Barcelona. Departament de Física Aplicada i Òptica) ; Sánchez Barrera, Florencio (Institut de Ciència de Materials de Barcelona) ; Fontcuberta, Josep (Institut de Ciència de Materials de Barcelona)
We show that using epitaxial strain and chemical pressure in orthorhombic YMnO3 and Co-substituted (YMn0. 95Co0. 05O3) thin films, a ferromagnetic response can be gradually introduced and tuned. These results, together with the measured anisotropy of the magnetic response, indicate that the unexpected observation of ferromagnetism in orthorhombic o-RMnO3 (R=Y,Ho,Tb,etc. [...]
2010 - 10.1063/1.3514575
Journal of applied physics, Vol. 108, Núm. 12 (Des. 2010) , p. 123917/1-123917/7  
20.
3 p, 180.1 KB Emergence of ferromagnetism in antiferromagnetic TbMnO3 by epitaxial strain / Martí Rovirosa, Xavier (Institut de Ciència de Materials de Barcelona) ; Skumryev, Vassil (Universitat Autònoma de Barcelona. Departament de Física) ; Ferrater Martorell, Cèsar (Universitat de Barcelona. Departament de Física Aplicada i Òptica) ; García-Cuenca Varona, María Victoria (Universitat de Barcelona. Departament de Física Aplicada i Òptica) ; Varela Fernández, Manuel, 1956- (Universitat de Barcelona. Departament de Física Aplicada i Òptica) ; Sánchez Barrera, Florencio (Institut de Ciència de Materials de Barcelona) ; Fontcuberta, Josep (Institut de Ciència de Materials de Barcelona) ; American Physical Society
We show that in oxide thin films of spiral antiferromagnetic orthorhombic TbMnO3, ferromagnetism emerges resulting from epitaxially induced strain. The unit cell volume can be tuned (contracting up to a 2%) by varying thickness and deposition conditions; it is found that the ferromagnetic response correlates with the unit cell deformation. [...]
2010 - 10.1063/1.3443714
Applied physics letters, Vol. 96, Issue 22 (May 2010) , p. 222505/1-222505/3  
21.
8 p, 783.4 KB Phonon and magnon scattering of antiferromagnetic Bi2Fe4O9 / Iliev, M. N. (University of Houston. Texas Center for Superconductivity) ; Litvinchuk, A. P. (University of Houston. Texas Center for Superconductivity) ; Hadjiev, V. G. (University of Houston. Texas Center for Superconductivity) ; Gospodinov, M. (Institut po fizika na tvŭrdoto ti︠a︡lo (Bŭlgarska akademii︠a︡ na naukite)) ; Skumryev, Vassil (Universitat Autònoma de Barcelona. Departament de Física) ; Ressouche, Eric (Commissariat à l'Énergie Atomique et aux Énergies Alternatives (França))
The phonon structure of antiferromagnetic Bi2Fe4O9 (space group Pbnm No. 55, TN≈240  K) was studied theoretically by calculations of lattice dynamics and experimentally between 10 and 300 K by polarized Raman spectroscopy. [...]
2010 - 10.1103/PhysRevB.81.024302
Physical review B : condensed matter and materials physics, Vol. 81, N. 2 (Jan. 2010) , p. 24302  
22.
4 p, 421.2 KB Magnetization reversal by electric-field decoupling of magnetic and ferroelectric domain walls in multiferroic-based heterostructures / Skumryev, Vassil (Universitat Autònoma de Barcelona. Departament de Física) ; Laukhin, Vladimir (Institut de Ciència de Materials de Barcelona) ; Fina, Ignasi (Institut de Ciència de Materials de Barcelona) ; Martí Rovirosa, Xavier (Institut de Ciència de Materials de Barcelona) ; Sánchez Barrera, Florencio (Institut de Ciència de Materials de Barcelona) ; Gospodinov, M. (Institut po fizika na tvŭrdoto ti︠a︡lo (Bŭlgarska akademii︠a︡ na naukite)) ; Fontcuberta, Josep (Institut de Ciència de Materials de Barcelona) ; American Physical Society
We demonstrate that the magnetization of a ferromagnet in contact with an antiferromagnetic multi-ferroic(LuMnO3)can be speedily reversed by electric-field pulsing, and the sign of the magnetic exchange bias can switch and recover isothermally. [...]
2011 - 10.1103/PhysRevLett.106.057206
Physical review letters, Vol. 106, Issue 5 (Feb. 2011) , p. 057206/1-057206/4  
23.
5 p, 402.4 KB Magnetoelastic coupling in La2/3Sr1/3MnO3 thin films on SrTiO3 / Pesquera, David (Institut de Ciència de Materials de Barcelona) ; Skumryev, Vassil (Universitat Autònoma de Barcelona. Departament de Física) ; Sánchez Barrera, Florencio (Institut de Ciència de Materials de Barcelona) ; Herranz Casabona, Gervasi (Institut de Ciència de Materials de Barcelona) ; Fontcuberta, Josep (Institut de Ciència de Materials de Barcelona)
Clamping of epitaxial La2/3Sr1/3MnO3 (LSMO) magnetic thin films on SrTiO3 (STO) substrates is shown to promote a clear modification of their magnetic properties at the STO cubic-tetragonal transition. [...]
2011 - 10.1103/PhysRevB.84.184412
Physical review B : condensed matter and materials physics, Vol. 84, Núm. 18 (Nov. 2011) , p. 184412/1-184412/5  

Articles : 25 records found   beginprevious14 - 23next  jump to record:
See also: similar author names
2 Skumryev, Vassil,
Interested in being notified about new results for this query?
Set up a personal email alert or subscribe to the RSS feed.