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A multi-frequency electron spin resonance (ESR) study provides evidence for the occurrence of low temperature ferromagnetic/spin-glass behavior in aligned arrays of sub-nanometer single walled carbon nanotubes confined in zeolite…

Mesoscale and Nanoscale Physics · Physics 2015-05-19 S. S. Rao , A. Stesmans , J. V. Noyen , P. Jacobs , B. Sels

X-ray diffraction experiments were performed on MnO confined in mesoporous silica SBA-15 and MCM-41 matrices with different channel diameters. The measured patterns were analyzed by profile analysis and compared to numerical simulations of…

Materials Science · Physics 2009-11-11 I. V. Golosovsky , I. Mirebeau , E. Elkaim , D. A. Kurdyukov , Y. A. Kumzerov

High-field electron spin resonance (ESR) experiments have been carried out in single crystals of La_{1-x}Sr_xMnO_3 in the concentration range 0 \le x \le 0.175. Different quasioptical arrangements have been utilized in the frequency range…

Strongly Correlated Electrons · Physics 2009-11-07 D. Ivannikov , M. Biberacher , H. -A. Krug von Nidda , A. Pimenov , A. A. Mukhin , A. M. Balbashov

On-chip Electron Spin Resonance (ESR) of magnetic molecules requires the ability to precisely position nanosized samples in antinodes of the electro-magnetic field for maximal magnetic interaction. A method is developed to entrap…

Mesoscale and Nanoscale Physics · Physics 2009-08-28 N. Groll , S. Bertaina , M. Pati , N. S. Dalal , I. Chiorescu

In order to better understand the transition from quantum to classical behavior in spin system, electron magnetic resonance (EMR) is studied in suspensions of superparamagnetic magnetite nanoparticles with an average diameter of ~ 9 nm and…

Materials Science · Physics 2009-11-13 Maxim M. Noginov , N. Noginova , O. Amponsah , R. Bah , R. Rakhimov , V. A. Atsarkin

Colossal magnetoresistance (CMR) emerges from intertwined spin and charge degrees of freedom in the form of ferromagnetic clusters also known as trapped magnetic polarons. As a result, CMR is rarely observed in antiferromagnetic materials.…

Strongly Correlated Electrons · Physics 2022-01-25 J. C. Souza , S. M. Thomas , E. D. Bauer , J. D. Thompson , F. Ronning , P. G. Pagliuso , P. F. S. Rosa

Coherent spin resonance methods such as nuclear magnetic resonance (NMR) and electron spin resonance (ESR) spectroscopy have led to spectrally highly sensitive, non-invasive quantum imaging techniques with groundbreaking applications in…

Here, we study the paramagnetic ions behavior in presence of a strong microwave electromagnetic field sustained inside a cryogenic sapphire whispering gallery mode resonator. The high frequency measurement resolution that can be now…

Instrumentation and Detectors · Physics 2015-06-19 Vincent Giordano , Serge Grop , Pierre-Yves Bourgeois , Yann Kersalé , Enrico Rubiola

SrMnO$_{3}$ (SMO) is a magnetic insulator and predicted to exhibit a multiferroic phase upon straining. Strained films of SMO display a wide range of magnetic orders, ranging from G-type to C-and A-type, indicative of competing magnetic…

Materials Science · Physics 2023-09-13 J. J. L. van Rijn , T. Banerjee

This is the first systematic ESR investigation of La_(1-x)Sr_(x)MnO_(3) single crystals for Sr concentrations x < 0.2. The rich phase diagram of this compound, which is dominated by the Jahn-Teller effect of Mn^(3+), is a matter of actual…

Strongly Correlated Electrons · Physics 2009-10-31 V. A. Ivanshin , J. Deisenhofer , H. -A. Krug von Nidda , A. Loidl , A. A. Mukhin , A. M. Balbashov , M. V. Eremin

We report on the electron spin resonance (ESR), heat capacity, magnetization, nuclear magnetic resonance (NMR), magnetic circular and linear dichroism (XMCD, XMLD), as well as the electrical resistivity of EuMn$_{2}$P$_{2}$ single crystals.…

We establish a testbed system for the development of high-sensitivity Electron Spin Resonance (ESR) techniques for small samples at cryogenic temperatures. Our system consists of a Niobium Nitride thin-film planar superconducting…

Magnetic nanoparticles of gamma-Fe2O3 coated by organic molecules and suspended in liquid and solid matrices, as well as a non-diluted magnetic fluid have been studied by electron magnetic resonance (EMR) at 77-380 K. Slightly asymmetric…

Materials Science · Physics 2009-11-11 N. Noginova , F. Chen , T. Weaver , E. P. Giannelis , A. B. Bourlinos , V. A. Atsarkin

RMs (reverse micelles) provide a controlled system for studying the unique structural and dynamic behaviors of confined water, thus gaining a general insight into the behavior or water under confinement and at interfaces. This study employs…

Soft Condensed Matter · Physics 2024-10-15 Romana Shathy , Alexandria Guinness , John M Franck

Electron spin resonance (ESR) spectroscopy in scanning tunneling microscopy (STM) has enabled probing the electronic structure of single magnetic atoms and molecules on surfaces with unprecedented energy resolution, as well as demonstrating…

Electron Spin Resonance (ESR) describes a suite of techniques for characterising electronic systems, with applications in physics, materials science, chemistry, and biology. However, the requirement for large electron spin ensembles in…

Quantum Physics · Physics 2015-03-04 L. T. Hall , P. Kehayias , D. A. Simpson , A. Jarmola , A. Stacey , D. Budker , L. C. L. Hollenberg

We studied the ferromagnetic topology in a Y$_{0.67}$Ca$_{0.33}$MnO$_3$ thin film with a combination of magnetic force microscopy and magnetization measurements. Our results show that the spin-glass like behavior, reported previously for…

Strongly Correlated Electrons · Physics 2015-06-12 Jeehoon Kim , N. Haberkorn , L. Civale , P. C. Dowden , R. Movshovich

The magnetic phase diagram $T_c(P)$ of the weak itinerant helimagnetic compound MnSi is reviewed upon a Nuclear Magnetic Resonance (NMR) experiment. We present a systematic study on the evolution of the NMR spin echo signal at $T=1.4$ K of…

Strongly Correlated Electrons · Physics 2016-08-31 C. Thessieu , K. Ishida , Y. Kitaoka , K. Asayama , G. Lapertot

We investigated the metal-ordered manganite system YBaMn2O6 using electron spin resonance (ESR) in the paramagnetic regime across the charge-ordering and structural phase transition at T_CO = 480 K and T_t = 520 K, respectively. All ESR…

Strongly Correlated Electrons · Physics 2009-11-13 D. Zakharov , J. Deisenhofer , H. -A. Krug von Nidda , T. Nakajima , Y. Ueda , A. Loidl

Experimental results on magnetic resonance (ESR) and magnetic susceptibility are given for single crystalline (VO)$_2$P$_2$O$_{7}$. The crystal growth procedure is briefly discussed. The susceptibility is interpreted numerically using a…

Condensed Matter · Physics 2009-10-30 A. V. Prokofiev , F. Büllesfeld , W. Assmus , H. Schwenk , D. Wichert , U. Löw , B. Lüthi
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