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Related papers: Oxygen vacancy induced re-entrant spin glass behav…

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We study the magnetic dynamics of magnetoelectric antiferromagnetic thin films, where an unconventional boundary ferromagnetism coexists with the bulk N\'{e}el phase below the N\'{e}el temperature. The spin exchange between the two order…

Mesoscale and Nanoscale Physics · Physics 2018-01-24 Ricardo Zarzuela , Se Kwon Kim , Yaroslav Tserkovnyak

We investigated the magnetic transitions in BiFeO$_3$ at low temperature (5-300 K) and observed nearly 90$^o$ rotation of magnetic domains (imaged by vertical magnetic force microscopy) across 150 K in an epitaxial thin film of thickness…

Magnetometry, x-ray, and neutron scattering have been used to study the structural and magnetic properties of a TbMnO3 thin film grown on a [001] SrTiO3 substrate by pulsed laser deposition. Although bulk TbMnO3 is a low temperature…

Materials Science · Physics 2009-11-13 B. J. Kirby , D. Kan , A. Luykx , M. Murakami , D. Kundaliya , I. Takeuchi

The double perovskite La2NiMnO6 (LNMO) exhibits complex magnetism due to the competition of magnetic interactions that are strongly affected by structural and magnetic inhomogeneities. In this work, we study the effect of oxygen annealing…

Materials Science · Physics 2022-03-15 Jasnamol P. Palakkal , Thorsten Schneider , Lambert Alff

Antiferromagnetic Kagome semimetals have attracted tremendous attentions for their potential application in antiferromagnetic topological spintronics. Effectively manipulating Kagome antiferromagnetic states could reveal abundant physical…

The presence of oxygen vacancy, as well as ordering of vacancies plays an important role in determining the electronic, ionic and thermal transport properties of many transition metal oxide materials. Controlling the concentration of oxygen…

Mesoscale and Nanoscale Physics · Physics 2018-12-05 Xue Rui , Robert Klie

The magnetic and magnetotransport properties of single crystalline La1-x-yPryCaxMnO3 (x=0.42, y=0.40) thin films (~140 nm) deposited on (110) oriented LaAlO3 and SrTiO3 substrates exhibit a crossover from the high temperature…

Materials Science · Physics 2015-06-22 Vasudha Agarwal , P. K. Siwach , V. P. S. Awana , H. K. Singh

The electronic structure of SrTiO3 and SrHfO3 (001) surfaces with oxygen vacancies is studied by means of first-principles calculations. We reveal how oxygen vacancies within the first atomic layer of the SrTiO3 surface (i) induce a large…

Strongly Correlated Electrons · Physics 2016-01-13 A. C. Garcia-Castro , M. G. Vergniory , E. Bousquet , A. H. Romero

We have investigated the electronic properties of epitaxial orthorhombic SrIrO3 thin-films under compressive strain. The metastable, orthorhombic SrIrO3 thin-films are synthesized on various substrates using an epi-stabilization technique.…

Strongly Correlated Electrons · Physics 2014-11-18 J. H. Gruenewald , J. Nichols , J. Terzic , G. Cao , J. W. Brill , S. S. A. Seo

We report on the observation of metallic behavior in thin films of oxygen-deficient SrTiO$_3$ - down to 9 unit cells - when coherently strained on (001) SrTiO$_3$ or DyScO$_3$-buffered (001) SrTiO$_3$ substrates. These films have carrier…

Materials Science · Physics 2016-06-06 Purnima P. Balakrishnan , Urusa S. Alaan , Matthew T. Gray , Yuri Suzuki

The structural crystal features, electron transport and magnetotransport of the epitaxial strontium iridate (SrIrO$_3$) and iridate/manganite SrIrO$_3$/La$_{0.7}$Sr$_{0.3}$MnO$_3$ heterostructure have been investigated. The influence of…

Thin films of the ferromagnetic metal SrRuO3 (SRO) show a varying easy magnetization axis depending on the epitaxial strain and undergo a metal-to-insulator transition with decreasing film thickness. We have investigated the magnetic…

We investigated the effects of temperature and magnetic field on the electronic structure of hexagonal RMnO3 (R = Gd, Tb, Dy, and Ho) thin films using optical spectroscopy. As the magnetic ordering of the system was disturbed, a systematic…

Strongly Correlated Electrons · Physics 2010-05-17 Woo Seok Choi , Soon Jae Moon , Sung Seok A. Seo , Daesu Lee , Jung Hyuk Lee , Pattukkannu Murugavel , Tae Won Noh , Yun Sang Lee

The authors investigated the structure and properties of GdBaCo$_{2}$O$_{5.5+\delta}$ thin films epitaxially grown on SrTiO$_{3}$ (001) single crystal substrates. The thin films were found to have a notable remnant magnetization above room…

Strongly Correlated Electrons · Physics 2009-01-13 G. Y. Wang , X. Y. Zhou , R. K. Zheng , Y. M. Hu , H. L. W. Chan , Y. Wang

We present evidence for spin polarized charge carriers in In$_2$O$_3$ films. Both In$_2$O$_3$ and Cr doped In$_2$O$_3$ films exhibit room temperature ferromagnetism after vacuum annealing, with a saturation moment of approximately 0.5…

The effects of strain on a film of mulitferroic GdMnO3 are investigated using both magnetometry and magneto-optic spectroscopy. Optical spectra, in the energy range 1.5eV - 3.5eV, were taken in Faraday geometry in an applied magnetic field…

Strongly Correlated Electrons · Physics 2010-11-19 Mohammed S. Al Qahtani , Marzook Alshammari , H. J Blythe , A. M. Fox , G. A. Gehring , N. Andreev , V. Chichkov , Ya Mukovskii

Antiferromagnets are emerging as promising alternatives to ferromagnets in spintronics applications. A key feature of antiferromagnets is their anisotropic magnetoresistance (AMR), which has the potential to serve as a sensitive marker for…

We report on multiple fundamental qualitative improvements in the growth of improper ferroelectric hexagonal YMnO$_3$ (YMO) thin films and heterostructures by pulsed laser deposition (PLD). By a combination of pre-growth substrate annealing…

Materials Science · Physics 2020-12-18 J. Nordlander , M. D. Rossell , M. Campanini , M. Fiebig , M. Trassin

In this paper we report the observation of curent induced change of resistance of thin metallic oxide films. The resistance changes at a very low current (current density $J \geq 10^{3}$ A/cm$^{2}$). We find that the time dependence…

Disordered Systems and Neural Networks · Physics 2007-05-23 Arindam Ghosh , A. K. Raychaudhuri , R. Sreekala , M. Rajeswari , T. Venkatesan

We present a comprehensive study of polar and magnetic excitations in BiFeO3 ceramics and a thin film epitaxially grown on an orthorhombic (110) TbScO3 substrate. Infrared reflectivity spectroscopy was performed at temperatures from 5 to…

Materials Science · Physics 2015-05-22 S. Skiadopoulou , V. Goian , C. Kadlec , F. Kadlec , X. F. Bai , I. C. Infante , B. Dkhil , C. Adamo , D. G. Schlom , S. Kamba
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