Demonstration of Ru as the 4th ferromagnetic element at room temperature
Patrick Quarterman,Congli Sun,Javier Garcia-Barriocanal,Mahendra Dc,Yang Lv,Sasikanth Manipatruni,Dmitri E. Nikonov,Ian A. Young,Paul M. Voyles,Jian-Ping Wang +9 more
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TLDR
This work reports on the first experimental realization of single element ferromagnetism, since Fe, Co, and Ni, in metastable tetragonal Ru, which has been predicted and is the 4th RT ferromagnetic single element material.Abstract:
Development of novel magnetic materials is of interest for fundamental studies and applications such as spintronics, permanent magnetics, and sensors. We report on the first experimental realization of single element ferromagnetism, since Fe, Co, and Ni, in metastable tetragonal Ru, which has been predicted. Body-centered tetragonal Ru phase is realized by use of strain via seed layer engineering. X-ray diffraction and electron microscopy confirm the epitaxial mechanism to obtain tetragonal phase Ru. We observed a saturation magnetization of 148 and 160 emu cm-3 at room temperature and 10 K, respectively. Control samples ensure the ferromagnetism we report on is from tetragonal Ru and not from magnetic contamination. The effect of thickness on the magnetic properties is also studied, and it is observed that increasing thickness results in strain relaxation, and thus diluting the magnetization. Anomalous Hall measurements are used to confirm its ferromagnetic behavior.read more
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Magnetic metal–organic framework composites for environmental monitoring and remediation
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TL;DR: Magnetic metal-organic framework (MMOF) composites, a combination of metalorganic frameworks and magnetic metal nanoparticles, results in the formation of composite materials with outstanding synergy properties that have been harnessed for environmental mitigation as mentioned in this paper.
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References
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Oscillations in exchange coupling and magnetoresistance in metallic superlattice structures: Co/Ru, Co/Cr, and Fe/Cr.
TL;DR: Mise en evidence d'un interaction d'echange intercouche antiferromagnetique et d'une magnetoconductivite en saturation dans les superreseaux Co/Cr et Co/Ru.
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High K/sub u/ materials approach to 100 Gbits/in/sup 2/
Dieter Weller,Andreas Moser,Liesl Folks,Margaret Evans Best,Wen Lee,Michael F. Toney,M. M. Schwickert,Jan-Ulrich Thiele,M. Doerner +8 more
TL;DR: In this article, the authors present a review of the literature on high Ku alternative media, both for longitudinal and perpendicular recording, with data on sputtered and evaporated thin FePt films, with coercivities exceeding 10000 Oe.
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Transport properties and origin of ferromagnetism in (Ga, Mn)As
TL;DR: In this paper, the authors measured the magnetic properties of a diluted magnetic semiconductor based on III-V semiconductors and determined the $p\ensuremath{-}d$ exchange between holes and Mn $3d$ spins.
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GenX: an extensible X-ray reflectivity refinement program utilizing differential evolution
Matts Björck,Gabriella Andersson +1 more
TL;DR: GenX is a versatile program using the differential evolution algorithm for fitting X-ray and neutron reflectivity data, utilizes the Parratt recursion formula for simulating specular reflectivity, and can fit an arbitrary number of data sets simultaneously.