Matches in SemOpenAlex for { <https://semopenalex.org/work/W57242023> ?p ?o ?g. }
Showing items 1 to 83 of
83
with 100 items per page.
- W57242023 abstract "This thesis concerns the growth and magnetic properties of thin films and multilayers. The samples were grown by magnetron sputtering, and characterized structurally mainly by x-ray diffraction and reflectivity. The magnetic characterization of the multilayers was done by magneto-optical Kerr technique, SQUID magnetometry and, in two samples, by neutron reflectometry.Arrays of small elements of polycrystalline permalloy (FeNi alloy with 19 wt% Fe) are of interest as a component in non-volatile magnetic random access memories (MRAM). Here the shape dependence of the domain structure in such elements was studied by magnetic force microscopy (MFM) and in thin ring magnets the 'onion' state could be seen for the first time. Also, by post-annealing in hydrogen atmosphere the number of domains decreased in each element due to enhanced relaxation and defect reduction.Furthermore, permalloy-based anisotropic magnetoresistance (AMR) in read heads are nowadays replaced by material combinations that have a giant magnetoresistance (GMR) effect. In this work Fe/V(001) and Fe0.82Ni0.18/V(001) superlattices, i.e. single-crystal-like multilayers, were investigated. These systems showed much smaller GMR effect compared to the Fe/Cr system. However, by introducing Ni into the Fe layers the magnetic anisotropy and the interlayer exchange coupling (IEC) decreased, thereby increasing the sensitivity, which is a key property for a magnetic sensor. The interface region showed a reduced magnetic moment, and the influence of the structural quality was modelled and investigated theoretically in the Fe0.82Ni0.18/V case. Also, in the Fe(2-3 ML)/V(x ML) superlattices (ML=monolayers) the transition temperature from long-range magnetic order to paramagnetic order oscillated with the V layer thickness (x) as a result of the oscillatory behaviour of the IEC.The introduction of hydrogen in the non-magnetic layers of, for example, Fe/V(001) superlattices is a way to tune the IEC strength. Here the tuning was used as a tool to study the magnetic order in a low-dimensional magnet. At the critical hydrogen concentration =0.022 the Fe layers in an Fe(2 ML)/V(13 ML) superlattice became decoupled. Then the system behaved as a two-dimensional Ising magnet with a finite ordering temperature of about 60 K." @default.
- W57242023 created "2016-06-24" @default.
- W57242023 creator A5030288847 @default.
- W57242023 creator A5053724807 @default.
- W57242023 creator A5061827755 @default.
- W57242023 creator A5084913277 @default.
- W57242023 date "2004-01-01" @default.
- W57242023 modified "2023-10-18" @default.
- W57242023 title "Magnetic properties of an antiferromagnetically coupled bcc Fe0.82Ni0.18/V(001) superlattice" @default.
- W57242023 hasPublicationYear "2004" @default.
- W57242023 type Work @default.
- W57242023 sameAs 57242023 @default.
- W57242023 citedByCount "0" @default.
- W57242023 crossrefType "journal-article" @default.
- W57242023 hasAuthorship W57242023A5030288847 @default.
- W57242023 hasAuthorship W57242023A5053724807 @default.
- W57242023 hasAuthorship W57242023A5061827755 @default.
- W57242023 hasAuthorship W57242023A5084913277 @default.
- W57242023 hasConcept C105382558 @default.
- W57242023 hasConcept C115260700 @default.
- W57242023 hasConcept C117958382 @default.
- W57242023 hasConcept C121332964 @default.
- W57242023 hasConcept C153946474 @default.
- W57242023 hasConcept C171250308 @default.
- W57242023 hasConcept C181635281 @default.
- W57242023 hasConcept C182260160 @default.
- W57242023 hasConcept C19067145 @default.
- W57242023 hasConcept C192562407 @default.
- W57242023 hasConcept C22423302 @default.
- W57242023 hasConcept C26873012 @default.
- W57242023 hasConcept C32546565 @default.
- W57242023 hasConcept C32938098 @default.
- W57242023 hasConcept C49040817 @default.
- W57242023 hasConcept C55357998 @default.
- W57242023 hasConcept C61427134 @default.
- W57242023 hasConcept C62520636 @default.
- W57242023 hasConcept C84154488 @default.
- W57242023 hasConceptScore W57242023C105382558 @default.
- W57242023 hasConceptScore W57242023C115260700 @default.
- W57242023 hasConceptScore W57242023C117958382 @default.
- W57242023 hasConceptScore W57242023C121332964 @default.
- W57242023 hasConceptScore W57242023C153946474 @default.
- W57242023 hasConceptScore W57242023C171250308 @default.
- W57242023 hasConceptScore W57242023C181635281 @default.
- W57242023 hasConceptScore W57242023C182260160 @default.
- W57242023 hasConceptScore W57242023C19067145 @default.
- W57242023 hasConceptScore W57242023C192562407 @default.
- W57242023 hasConceptScore W57242023C22423302 @default.
- W57242023 hasConceptScore W57242023C26873012 @default.
- W57242023 hasConceptScore W57242023C32546565 @default.
- W57242023 hasConceptScore W57242023C32938098 @default.
- W57242023 hasConceptScore W57242023C49040817 @default.
- W57242023 hasConceptScore W57242023C55357998 @default.
- W57242023 hasConceptScore W57242023C61427134 @default.
- W57242023 hasConceptScore W57242023C62520636 @default.
- W57242023 hasConceptScore W57242023C84154488 @default.
- W57242023 hasLocation W572420231 @default.
- W57242023 hasOpenAccess W57242023 @default.
- W57242023 hasPrimaryLocation W572420231 @default.
- W57242023 hasRelatedWork W1672573577 @default.
- W57242023 hasRelatedWork W1917649840 @default.
- W57242023 hasRelatedWork W1972455196 @default.
- W57242023 hasRelatedWork W1985817170 @default.
- W57242023 hasRelatedWork W1988800535 @default.
- W57242023 hasRelatedWork W1998496715 @default.
- W57242023 hasRelatedWork W2001453823 @default.
- W57242023 hasRelatedWork W2004577882 @default.
- W57242023 hasRelatedWork W2004590142 @default.
- W57242023 hasRelatedWork W2023892214 @default.
- W57242023 hasRelatedWork W2024080067 @default.
- W57242023 hasRelatedWork W2057986337 @default.
- W57242023 hasRelatedWork W2068964923 @default.
- W57242023 hasRelatedWork W2080197157 @default.
- W57242023 hasRelatedWork W2094031290 @default.
- W57242023 hasRelatedWork W2176087004 @default.
- W57242023 hasRelatedWork W2980033950 @default.
- W57242023 hasRelatedWork W85506159 @default.
- W57242023 hasRelatedWork W96690348 @default.
- W57242023 hasRelatedWork W2043036968 @default.
- W57242023 isParatext "false" @default.
- W57242023 isRetracted "false" @default.
- W57242023 magId "57242023" @default.
- W57242023 workType "article" @default.