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Epitaxial CoFe2O4/Al2O3 bilayers are expected to be highly efficient spin injectors into Si owing to the spin filter effect of CoFe2O4. To exploit the full potential of this system, understanding the microscopic origin of magnetically dead…

We have explored the possibility to orient spins in antiferromagnetic thin films with low magnetocrystalline anisotropy via the exchange coupling to adjacent antiferromagnetic films with high magnetocrystalline anisotropy. We have used MnO…

Strongly Correlated Electrons · Physics 2008-06-12 S. I. Csiszar , M. W. Haverkort , T. Burnus , Z. Hu , A. Tanaka , H. H. Hsieh , H. -J. Lin , C. T. Chen , J. C. Cezar , N. B. Brookes , T. Hibma , L. H. Tjeng

Single crystals of Cu$_3$Bi(SeO$_3$)$_2$O$_2$Cl were investigated using high-resolution capacitance dilatometry in magnetic fields up to 15 T. Pronounced magnetoelastic coupling is found upon evolution of long-range antiferromagnetic order…

Strongly Correlated Electrons · Physics 2022-05-10 S. Spachmann , P. Berdonosov , M. Markina , A. Vasiliev , R. Klingeler

We measured the magnetoresistance of the 2D electron liquid formed at the (111) LaAlO$_3$/SrTiO$_3$ interface. The hexagonal symmetry of the interface is manifested in a six-fold crystalline component appearing in the anisotropic…

Strongly Correlated Electrons · Physics 2017-06-14 P. K. Rout , I. Agireen , E. Maniv , M. Goldstein , Y. Dagan

In ferromagnetic oxide epitaxial multilayers, magnetic properties and interlayer coupling are determined by a variety of factors. Beyond the contribution of interlayer exchange coupling, strain and interfacial effects, such as structural…

The electronic reconstruction at the interface between two insulating oxides can give rise to a highly-conductive interface. In analogy to this remarkable interface-induced conductivity we show how, additionally, magnetism can be induced at…

Strongly Correlated Electrons · Physics 2007-06-13 A. Brinkman , M. Huijben , M. van Zalk , J. Huijben , U. Zeitler , J. C. Maan , W. G. van der Wiel , G. Rijnders , D. H. A. Blank , H. Hilgenkamp

Strongly-correlated transition-metal oxides are widely known for their various exotic phenomena. This is exemplified by rare-earth nickelates such as LaNiO$_{3}$, which possess intimate interconnections between their electronic, spin, and…

Development of modern spintronic devices requires materials exhibiting specific magnetic effects. In this paper, we investigate a magnetization reversal mechanism in a [Co/Pdx]7/CoO/[Co/Pdy]7 thin-film composite where an antiferromagnet is…

Materials Science · Physics 2021-02-01 Marcin Perzanowski , Arkadiusz Zarzycki , Jakub Gregor-Pawlowski , Marta Marszalek

We report high-resolution dilatometry on high-quality single crystals of NiTiO3 grown by means of the optical floating-zone technique. The anisotropic magnetic phase diagram is constructed from thermal expansion and magnetostriction studies…

We consider magnetostriction in magnetic materials. Starting from a microscopic lattice model of the magneto-elastic coupling, we derive the continuum magnetostriction Hamiltonian in cubic ferromagnets and antiferromagnets. In ferromagnets,…

Mesoscale and Nanoscale Physics · Physics 2018-10-04 Haakon T. Simensen , Roberto E. Troncoso , Arne Brataas

The study investigates the manipulation of the magnetic anisotropy in a thick (1 $\mu$m) Ni$_{90}$Fe$_{10}$ layer electrodeposited on a ferroelectric BaTiO$_3$(001) substrate, using a combination of Magneto-optical Kerr Effect,…

It was experimentally observed that both magnetic anisotropy and spin-orbit interaction strength change when the magnetization of the nanomagnet is reversed. This indicates a variation in spin-orbit interaction strength depending on whether…

Mesoscale and Nanoscale Physics · Physics 2024-07-10 Vadym Zayets

Novel phenomena appear when two different oxide materials are combined together to form an interface. For example, at the interface of LaAlO3/SrTiO3, two dimensional conductive states form to avoid the polar discontinuity and magnetic…

Materials Science · Physics 2017-02-23 Fang Wang , Zhaohui Ren , He Tian , Shengyuan A. Yang , Yanwu Xie , Yunhao Lu , Jianzhong Jiang , Gaorong Han , Kesong Yang

We report an unusual, non-monotonous dependence of the exchange bias on the thickness of the ferromagnetic layer in a ferromagnet/antiferromagnet bilayer system. We show that in epitaxial CoO/Fe(110) bilayers, the evolution of the Fe…

Mesoscale and Nanoscale Physics · Physics 2017-09-29 M. Ślęzak , T. Ślęzak , P. Dróżdż , B. Matlak , K. Matlak , J. Korecki

The spin and orbital magnetic moments of the Fe3O4 epitaxial ultrathin film synthesized by plasma assisted simultaneous oxidization on MgO(100) have been studied with X-ray magnetic circular dichroism (XMCD). The ultrathin film retains a…

Control of magnetism by an applied electric field is a desirable technique for the functionalization of magnetic materials. Motivated by recent experiments, we study the electric field control of the interfacial magnetism of…

Materials Science · Physics 2023-08-21 Churna Bhandari , S Satpathy

We present a detailed study of the ground-state magnetic structure of ultrathin Fe films on the surface of fcc Ir(001). We use the spin-cluster expansion technique in combination with the relativistic disordered local moment scheme to…

Mesoscale and Nanoscale Physics · Physics 2015-05-30 A. Deák , L. Szunyogh , B. Ujfalussy

The electronic and magnetic properties of NdNiO$_3$ (NNO) thin films are very sensitive to epitaxial strain and to the proximity to ferromagnetic oxides. In this work, we investigate the structural, electronic, and magnetic properties of…

Materials Science · Physics 2024-09-20 Henrique M. M. Cardoso , Maria C. O. Aguiar , Cinthia Piamonteze , Walber H. Brito

The interaction between superconductivity and ferromagnetism in thin film superconductor/ferromagnet heterostructures is usually reflected by a change in superconductivity of the S layer set by the magnetic state of the F layers. Here we…

Hexagonal YMnO_3 with space group P63cm is one of the rare examples of multiferroic materials that exhibit co-dependence of a robust ferroelectric phase along with antiferromagnetic ordering. This is primarily ascribed to tilting of the…

Strongly Correlated Electrons · Physics 2010-05-25 A. K. Singh , S. D. Kaushik , V. Siruguri , S. Patnaik