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The magnetic behavior of thin ferromagnetic itinerant-electron films is investigated within the strongly correlated single-band Hubbard model. For its approximate solution we apply a generalization of the modified alloy analogy (MAA) to…

Strongly Correlated Electrons · Physics 2009-10-31 T. Herrmann , W. Nolting

Laser-induced magnetization precessional dynamics was investigated in epitaxial films of Mn$_3$Ge, which is a tetragonal Heusler-like nearly compensated ferrimagnet. The ferromagnetic resonance (FMR) mode was observed, the precession…

Materials Science · Physics 2016-07-26 S. Mizukami , A. Sugihara , S. Iihama , Y. Sasaki , K. Z. Suzuki , T. Miyazaki

Thin films of Ti1-xFexO2 (x=0 and 0.05) have been prepared on sapphire substrates by spin-on technique starting from metal organic precursors. When heat treated in air at 550 and 700 degrees C respectively, these films present pure anatase…

Materials Science · Physics 2009-11-10 R. Suryanarayanan , V. M. Naik , P. Kharel , P. Talgala , R. Naik

The mechanism underlying femtosecond laser pulse induced ultrafast magnetization dynamics remains elusive despite two decades of intense research on this phenomenon. Most experiments focused so far on characterizing magnetization and charge…

Recently, Sharma et al. [Adv. Sci. 9, 2203473 (2022)] claimed that thin films (around 20 nm) of UO2 deposited on perovskite substrates exhibit strongly enhanced paramagnetism (called induced ferromagnetism by the authors). Moments of up to…

In the first part of this work we calculate the high frequency magnetoelectric susceptibility of a simultaneously ferroelectric and canted antiferromagnetic (also know as weak ferromagnetic) thin film with magnetostrictive magnetoelectric…

Materials Science · Physics 2010-03-09 K. L. Livesey , R. L. Stamps

Thin films of TbMnO3 have been grown on SrTiO3 substrates. The films grow under compressive strain and are only partially clamped to the substrate. This produces remarkable changes in the magnetic properties and, unlike the bulk material,…

Materials Science · Physics 2009-11-13 D. Rubi , C. de Graaf , C. J. M. Daumont , D. Mannix , R. Broer , B. Noheda

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

A time-resolved ferromagnetic resonance technique was used to investigate the magnetization dynamics of a 10 nm thin Permalloy film. The experiment consisted of a sequence of magnetic field pulses at a repetition rate equal to the magnetic…

Materials Science · Physics 2009-11-11 Th. Gerrits , M. L. Schneider , A. B. Kos , T. J. Silva

Advancing electromechanical resonators towards terahertz frequencies opens vast bandwidths for phononic signal processing. In quantum phononics, mechanical resonators at these frequencies can remain in their quantum ground state even at…

Applied Physics · Physics 2025-08-07 Jiacheng Xie , Weifeng Wu , Mohan Shen , Patrick Fay , Hong X. Tang

The compensated magnetic order and characteristic, terahertz frequencies of antiferromagnetic materials makes them promising candidates to develop a new class of robust, ultra-fast spintronic devices. The manipulation of antiferromagnetic…

We investigated the thermal evolution of the magnetic properties of MnAs epitaxial films grown on GaAs(001) during the coexistence of hexagonal/orthorhombic phases using polarized resonant (magnetic) soft X-ray scattering and magnetic force…

Investigations of the complex behavior of the magnetization of manganese arsenide thin films due to defects induced by irradiation of slow heavy ions are presented. In addition to the thermal hysteresis suppression already highlighted in M.…

Mesoscale and Nanoscale Physics · Physics 2024-01-30 M Trassinelli , L Bernard Carlsson , S Cervera , M Eddrief , V Etgens , V Gafton , E Lacaze , E Lamour , M Lévy , S Macé , C. Prigent , J. -P. Rozet , S Steydli , M Marangolo , D Vernhet

The effect of thermal fluctuations on a thin film magnetoresistive element has been calculated. The technique involves adding to the basic spin dynamics a general form of interaction with a thermal bath. For a general anisotropic magnetic…

Materials Science · Physics 2007-05-23 Vladimir L. Safonov , H. Neal Bertram

The broadband microstrip ferromagnetic resonance technique has been applied for detection and characterization of a magnetic inhomogeneity in a film sample. In the case of a 100nm thick Permalloy film an additional magnetically depleted top…

Ferromagnetic resonance (FMR) excitation of a ferromagnetic metal single-layer film was tried by using a couple of permanent magnets as the source of the uniform static magnetic field and by using a co-planer waveguide connected with a…

Applied Physics · Physics 2024-10-30 Ryutoku Fujii , Eiji Shikoh

The rf sputtered copper ferrite films contain nanocrystalline grains. In these films, the magnetization does not saturate even in high magnetic fields. This phenomenon of high field susceptibility is attributed to the defects and/or…

Strongly Correlated Electrons · Physics 2010-10-12 P. D. Kulkarni , R. P. R. C. Aiyar , Shiva Prasad , N. Venkataramani , R. Krishnan , Wenjie Pang , Ayon Guha , R. C. Woodward , R. L. Stamps

We have investigated the ultrafast spin dynamics in EuO thin films by time-resolved Faraday rotation spectroscopy. The photoinduced magnetization is found to be increased in a transient manner, accompanied with subsequent demagnetization.…

Materials Science · Physics 2015-06-05 F. Liu , T. Makino , T. Yamazaki , K. Ueno , A. Tsukazaki , T. Fukumura , Y. Kong , M. Kawasaki

Ferrimagnetic materials with a compensation temperature have recently attracted interest because of their unique combination of ferromagnetic and antiferromagnetic properties. However, their magnetization dynamics near the compensation…

A spontaneous ferromagnetic moment can be induced in Bi$_{2}$Te$_{3}$ thin films below a temperature T $\approx$ 16 K by the introduction of Mn dopants. We demonstrate that films grown via molecular beam epitaxy with the stoichiometry…

Materials Science · Physics 2023-01-26 Ryan Van Haren , Toyanath Joshi , David Lederman