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Magnetocaloric properties of an inhomogeneous magnetic system of a 7.6 nm La${}_{0.7}$Sr${}_{0.3}$MnO${}_{3}$ consisting of superparamagnetic (SPM) with blocking temperature ( $T_B$ = 240 K) and ferromagnetic (FM) phases ( $T_C$ = 290 K) is…

Materials Science · Physics 2019-07-02 Navid Mottaghi , Robbyn B. Trappen , Saeed Yousefi , Mohindar S. Seehra , Mikel B. Holcomb

We study the dc resistivity of UNi2Al3 thin films as a function of temperature and magnetic field. We focus on the temperature range around the antiferromagnetic transition (TN \approx 4 K in zero applied field). From a clear signature of…

Strongly Correlated Electrons · Physics 2012-11-14 Marc Scheffler , Eva Rose , Julia P. Ostertag , Karl Schrem , Katrin Steinberg , Martin Dressel , Martin Jourdan

We provide evidence for a finite temperature ferromagnetic transition in 2-dimensions as $H \to 0$ in thin films of $^3$He on graphite, a model system for the study of two-dimensional magnetism. We perform pulsed and CW NMR experiments at…

Condensed Matter · Physics 2009-11-07 H. M. Bozler , Yuan Gu , Jinshan Zhang , K. S. White , C. M. Gould

Magnetic skyrmions are two-dimensional non-collinear spin textures characterised by an integer topological number. They commonly crystallise at low temperatures in bulk noncentrosymmetric ferromagnets where the lack of inversion symmetry…

Using polarization-resolved Raman spectroscopy, we investigate layer number, temperature, and magnetic field dependence of Raman spectra in one- to four-layer $\mathrm{CrI_{3}}$. Layer-number-dependent Raman spectra show that in the…

We analyze the finite temperature phase diagram of ultrathin magnetic films by introducing a mean field theory, valid in the low anisotropy regime, i.e., close to de Spin Reorientation Transition. The theoretical results are compared with…

Statistical Mechanics · Physics 2015-06-11 Santiago A. Pighin , Orlando V. Billoni , Sergio A. Cannas

Using conductive atomic force microscopy, we observed non-uniform distributions of metallic and insulating domains on the surface of a single crystalline (La0.4Pr0.6)0.67Ca0.33MnO3 film grown on a (110) NdGaO3 substrate. The electronic…

Materials Science · Physics 2014-11-18 Surendra Singh , M. R. Fitzsimmons , H. Jeen , A. Biswas , M. E. Hawley

Non-centrosymmetric magnetic materials are a promising platform for stabilizing chiral spin textures, such as skyrmions and cycloidal magnetic states. This is particularly true in epitaxial thin film geometries, where strain and interface…

The temperature dependence of the magnetisation of a Cu(Mn) spin glass ($T_g$ $\approx$ 57 K) has been investigated using weak probing magnetic fields ($H$ = 0.5 or 0 Oe) and specific thermal protocols. The behaviour of the zero-field…

Disordered Systems and Neural Networks · Physics 2015-05-18 R. Mathieu , M. Hudl , P. Nordblad

The two stable surfaces of GdRu2Si2 are studied using spin-polarized scanning tunneling microscopy (SP-STM). Depending on the applied magnetic field different magnetic phases have been found and the presented measurements are in agreement…

Two-dimensional (2D) layered magnetic materials are generating a great amount of interest for the next generation of electronic devices thanks to their remarkable properties associated to spin dynamics. The recently discovered layered…

After years of research into colossal magnetoresistant (CMR) manganites using bulk techniques, there has been a recent upsurge in experiments directly probing the electronic states at or near the surface of the bilayer CMR materials…

Strongly Correlated Electrons · Physics 2009-03-13 S. de Jong , Y. Huang , I. Santoso , F. Massee , R. Follath , O. Schwarzkopf , L. Patthey , M. Shi , M. S. Golden

Magnetization measurements were performed on two sigma-phase samples of Fe(100-x)V(x) (x=35.5, 34.1) vs. temperature, T, and in DC magnetic field, of various amplitudes. Using three characteristic temperatures, magnetic phase diagrams in…

Strongly Correlated Electrons · Physics 2016-12-28 M. Sikora , S. M. Dubiel

We present the results of the characterization of Mg/Co periodic multilayers and their thermal stability for the EUV range. The annealing study is performed up to a temperature of 400\degree C. Images obtained by scanning transmission…

Single crystals of EuPtSi$_3$, which crystallize in the BaNiSn$_3$-type crystal structure, have been grown by high temperature solution growth method using molten Sn as the solvent. EuPtSi$_3$ which lacks the inversion symmetry and has only…

Strongly Correlated Electrons · Physics 2011-12-22 Neeraj Kumar , S. K. Dhar , P. Manfrinetti , P. Bonville , A. Thamizhavel

A magnetic phase diagram for EuPdSn_2 is constructed based on magnetization, DC-susceptibility and specific heat as a function of applied field, and neutron diffraction results at zero field. The contribution of the ferromagnetic FM and…

Strongly Correlated Electrons · Physics 2024-04-30 Julian G. Sereni , Ivan Čurlik , Alberto Martinelli , Mauro Giovannini

Structural, magnetic and magnetotransport properties of (Bi$_{1-x}$Eu$_x$)$_2$Se$_3$ thin films have been studied experimentally as a function of Eu content. The films were synthesized by MBE. It is demonstrated that Eu distribution is not…

We report on spin atomistic calculations used to model static and dynamic magnetic properties of inhomogeneous ultrathin iron films. Active magnetic layers in next-generation spintronic devices are becoming so thin that they exhibit some…

We calculate the temperature and layer-dependent electronic structure of a 20-layer EuO(100)-film using a combination of first-principles and model calculation based on the ferromagnetic Kondo-lattice model. The results suggest the…

Strongly Correlated Electrons · Physics 2009-11-07 R. Schiller , W. Nolting

The successful isolation of graphene ten years ago has evoked a rapidly growing scientific interest in the nature of two-dimensional (2D) crystals. A number of different 2D crystals has been produced since then, with properties ranging from…

Mesoscale and Nanoscale Physics · Physics 2013-11-12 B. Sachs , T. O. Wehling , K. S. Novoselov , A. I. Lichtenstein , M. I. Katsnelson