Relevant bibliographies by topics / NMR magnetometry

Academic literature on the topic 'NMR magnetometry'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "NMR magnetometry"

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Cowan, Brian. "Asymmetric NMR lineshapes and precision magnetometry." Measurement Science and Technology 7, no. 4 (April 1, 1996): 690–95. http://dx.doi.org/10.1088/0957-0233/7/4/028.

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Flay, D., D. Kawall, T. Chupp, S. Corrodi, M. Farooq, M. Fertl, J. George, et al. "High-accuracy absolute magnetometry with application to the Fermilab Muon g-2 experiment." Journal of Instrumentation 16, no. 12 (December 1, 2021): P12041. http://dx.doi.org/10.1088/1748-0221/16/12/p12041.

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Abstract We present details of a high-accuracy absolute scalar magnetometer based on pulsed proton NMR. The B-field magnitude is determined from the precession frequency of proton spins in a cylindrical sample of water after accounting for field perturbations from probe materials, sample shape, and other corrections. Features of the design, testing procedures, and corrections necessary for qualification as an absolute scalar magnetometer are described. The device was tested at B = 1.45 T but can be modified for a range exceeding 1–3 T. The magnetometer was used to calibrate other NMR magnetometers and measure absolute magnetic field magnitudes to an accuracy of 19 parts per billion as part of a measurement of the muon magnetic moment anomaly at Fermilab.
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Xu, M., M. D. Hossain, H. Saadaoui, T. J. Parolin, K. H. Chow, T. A. Keeler, R. F. Kiefl, et al. "Proximal magnetometry in thin films using NMR." Journal of Magnetic Resonance 191, no. 1 (March 2008): 47–55. http://dx.doi.org/10.1016/j.jmr.2007.11.022.

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Fraser, Hector W. L., Gary S. Nichol, Dušan Uhrín, Ulla Gro Nielsen, Marco Evangelisti, Jürgen Schnack, and Euan K. Brechin. "Order in disorder: solution and solid-state studies of [MIII2MII5] wheels (MIII = Cr, Al; MII = Ni, Zn)." Dalton Transactions 47, no. 34 (2018): 11834–42. http://dx.doi.org/10.1039/c8dt00685g.

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Selvanathan, Pramila, Vincent Dorcet, Thierry Roisnel, Kévin Bernot, Gang Huang, Boris Le Guennic, Lucie Norel, and Stéphane Rigaut. "trans to cis photo-isomerization in merocyanine dysprosium and yttrium complexes." Dalton Transactions 47, no. 12 (2018): 4139–48. http://dx.doi.org/10.1039/c8dt00299a.

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A unique light-switching behavior is revealed in Yttrium(iii) and Dysprosium(iii) merocyanine complexes through NMR and AC magnetometry experiments. Its impact on slow relaxation of magnetization is described.
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Schmidt, Robert D., Caleb A. Kent, Javier J. Concepcion, Wenbin Lin, Thomas J. Meyer, and Malcolm D. E. Forbes. "A little spin on the side: solvent and temperature dependent paramagnetism in [RuII(bpy)2(phendione)]2+." Dalton Trans. 43, no. 47 (2014): 17729–39. http://dx.doi.org/10.1039/c4dt01868k.

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Magnetometry, 1H-NMR, EPR and substituent effects are used to explain solvent and temperature dependent paramagnetism in [RuII(bpy)2(phendione)](PF6)2.
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Grisi, Marco, Gaurasundar Marc Conley, Pascal Sommer, Jacques Tinembart, and Giovanni Boero. "A single-chip integrated transceiver for high field NMR magnetometry." Review of Scientific Instruments 90, no. 1 (January 2019): 015001. http://dx.doi.org/10.1063/1.5066436.

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Martel, Laura, Thibault Charpentier, Pedro Amador Cedran, Chris Selfslag, Mohamed Naji, Jean-Christophe Griveau, Eric Colineau, and Rachel Eloirdi. "Insight into the Crystal Structures and Physical Properties of the Uranium Borides UB1.78±0.02, UB3.61±0.041 and UB11.19±0.13." Minerals 12, no. 1 (December 24, 2021): 29. http://dx.doi.org/10.3390/min12010029.

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In this study we reported the synthesis of three polycrystalline uranium borides UB1.78±0.02, UB3.61±0.041, and UB11.19±0.13 and their analyses using chemical analysis, X-ray diffraction, SQUID magnetometry, solid-state NMR, and Fourier transformed infrared spectroscopy. We discuss the effects of stoichiometry deviations on the lattice parameters and magnetic properties. We also provide their static and MAS-NMR spectra showing the effects of the 5f-electrons on the 11B shifts. Finally, the FTIR measurements showed the presence of a local disorder.
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Zagorsky D. L., Doludenko I. M., Khaibullin R. I., Chuprakov S. A., Gippius A. A., Zhurenko S. V., Tkachev A. V., et al. "Synthesis features, structure, magnetometry and NMR spectroscopy of nanowires of various types." Physics of the Solid State 64, no. 9 (2022): 1158. http://dx.doi.org/10.21883/pss.2022.09.54144.25hh.

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Various types of nanowires obtained by matrix synthesis --- homogeneous (from iron) and heterogeneous (layered) --- have been studied. A technique for obtaining arrays of layered nanowires with alternating thin layers of magnetic and non-magnetic metals (Co/Cu, Ni/Cu) has been developed and described. Microscopy methods (SEM and TEM with elemental analysis) have been used to study the topography of the resulting structures, the diameters of nanowires and the thicknesses of individual layers, and the features of interlayer interfaces. Methods of synthesis of nanowires with thin layers and clear boundaries are proposed --- dilution of the electrolyte, use of a reference electrode, control of the leaked charge. Layered nanowires have been studied by magnetometry methods and it has been shown that the magnetic properties of an array of layered nanowires (in particular, the direction of the axis of light magnetization in the Co/Cu-NP array) depend not only on the aspect ratio of the magnetic layer, but also on the ratio of the thickness of the magnetic metal layer to the thickness of a non-magnetic spacer (copper layer). The nuclear magnetic resonance (NMR) method was used to study two types of nanowires. The NMR method (on 59-Co nuclei) studied the layer structures of Co/Cu: it is shown that in nanowires with layers of smaller thickness (and, accordingly, with a large contribution of interfaces), a large proportion of Co atoms coordinated by Cu atoms is observed. The high proportion of atoms coordinated by copper suggests that an admixture of copper enters the cobalt layers. Homogeneous iron nanowires (NMR on 57-Fe nuclei) were compared with bulk iron samples. A shift of the line towards high frequencies (by 0.3 MHz) was detected, indicating an increase in the field by about 0.2 T. A significant broadening of the line and a decrease in the spin-lattice relaxation time may indicate a significant variation in the local magnetic field values. Keywords: nanowires, matrix synthesis, microscopy, elemental analysis, magnetic properties, NMR.
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Bevilacqua, G., V. Biancalana, Y. Dancheva, and L. Moi. "All-optical magnetometry for NMR detection in a micro-Tesla field and unshielded environment." Journal of Magnetic Resonance 201, no. 2 (December 2009): 222–29. http://dx.doi.org/10.1016/j.jmr.2009.09.013.

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Dissertations / Theses on the topic "NMR magnetometry"

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Boero, Giovanni. "Integrated NMR probe for magnetometry /." [S.l.] : [s.n.], 2000. http://library.epfl.ch/theses/?nr=2211.

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Van, Zyl Derrick Steven. "SQUID detected low-field NMR for the evaluation of internal fruit quality." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/5208.

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Thesis (MScEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2010.
ENGLISH ABSTRACT: Assessing the quality of fruit has become vitally important for farmers and growers. With retailers placing ever stricter requirements on fresh produce, growers have to spend a greater amount of time and effort sorting and grading their harvest. Increasingly, vendors are placing requirements not only on external factors like colour, and firmness, but on internal quality factors such as sugar content and acidity, because, although consumers buy fruit based on their external appearances, the taste of the fruit is what determines whether the consumer will buy again. Different techniques exist that probe the internal quality of fruit non-destructively. The technique most widely used today is Near Infrared Spectroscopy. This technique is powerful, but has certain limitations such as poor reliability and the need for constant recalibration. This thesis suggests an alternative method for evaluating internal fruit quality based on low-field nuclear magnetic resonance detected by superconducting quantum interference devices. It introduces the theory of SQUIDs and NMR, and evaluates the use of SQUID detected NMR spectroscopy as a method for determining the internal quality of fruit. The fabrication techniques and processes are explained in detail and a design for a SQUID detected NMR spectrometer is given. Relevant simulations and simulation results are also given. No working SQUID could be fabricated and, as such, no working NMR spectrometer was demonstrated. This thesis serves as a reference work for future research.
AFRIKAANSE OPSOMMING: Bepaling van die gehalte van vrugte het vir boere uiters belangrik geword. Met kleinhandelaars wat al strenger vereistes plaas op vars produkte moet boere meer tyd en inspanning bestee met die sortering en gradering van hul oes. Handelaars plaas nie net vereistes op eksterne kwaliteitsfaktore soos kleur en fermheid nie, maar begin al hoe strenger vereistes plaas op interne kwaliteitsfaktore soos suikerinhoud en suurgehalte, want, hoewel verbruikers vrugte koop op grond van hul eksterne kwaliteitsfaktore, is dit die smaak van die vrug wat bepaal of die verbruiker weer die vrug sal koop. Verskillende tegnieke bestaan wat die interne kwaliteit van vrugte op ’n nie-destruktiewe manier kan bepaal. Die mees algemene tegniek is Naby Infrarooi Spektroskopie. Hierdie tegniek is kragtig maar het sekere beperkings soos swak betroubaarheid en die noodsaaklikheid van konstante herkalibrasie. Hierdie tesis stel ’n alternatiewe metode vir die evaluering van interne vrugkwaliteit gebaseer op lae-veld kernmagnetiese resonans waargeneem deur supergeleidende kwantum inmenging toestelle voor. Dit stel die teorie van SKWITs en KMR bekend, en evalueer die gebruik van SKWIT-bespeurde KMR spektroskopie as ’n metode vir die bepaling van die interne kwaliteit van vrugte. Die fabrikasie tegnieke en prosesse word in detail verduidelik en ’n ontwerp vir ’n SWKIT opgevangde KMR spektrometer word gegee. Toepaslike simulasies en simulasie resultate word ook gegee. Geen werkende SKWIT kon vervaardig word nie en as gevolg daarvan kon geen werkende KMR spektrometer gedemonstreer word nie. Hierdie tesis dien as ’n naslaan werk vir toekomstige navorsing.
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Lang, Humblot Karine. "Etude et réalisation d'un magnétomètre à résonance magnétique nucléaire à polarisation dynamique pour les applications en forage pétrolier." Université Joseph Fourier (Grenoble), 1997. http://www.theses.fr/1997GRE10023.

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Les magnetometres a resonance magnetique nucleaire bases sur le phenomene de polarisation dynamique sont des instruments tres adaptes a la mesure du champ magnetique terrestre dans les puits de forage petrolier, ce qui permet une datation assez precise des couches geologiques concernees. Le magnetometre contient un solvant protone avec des radicaux libres en solution afin de realiser la polarisation dynamique qui amplifie le signal nucleaire des protons inobservable sans ce dispositif. Le but de ce travail est d'ameliorer les performances du magnetometre en presence de gradients de champs magnetiques importants et de permettre son fonctionnement jusqu'a des temperatures relativement elevees. Le choix de la solution radicalaire est crucial. Les criteres preponderants sont l'obtention d'un radical stable presentant une structure hyperfine interne importante et une largeur de raie rpe fine. Nous avons developpe un modele plus performant de cette largeur de raie qui nous a permis de definir precisement les caracteristiques requises pour le radical et le solvant. Nous avons montre que la tenue en gradient de la solution est conditionnee par des temps de relaxation nucleaires courts et la correlation entre ces deux effets a ete formulee a l'aide d'un modele theorique en accord avec les resultats experimentaux. L'ensemble de ces criteres a conduit au choix de la solution de triglyme contenant le radical nitroxyde tmio. Cette solution stable et relativement resistante aux gradients de champ magnetiques est la plus performante pour notre application. Un nouvel oscillateur base sur cette solution a ete concu et caracterise. Une etude fondamentale complementaire et originale sur la relaxation intermoleculaire entre les protons du solvant et les spins electroniques des radicaux a structure hyperfine interne a ete developpee. Le comportement des densites spectrales selon une loi proportionnelle a la racine de la frequence de resonance nucleaire a ete observe dans divers domaines de frequence, ce qui a permis une determination precise de la constante de diffusion relative du couple radical-solvant
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Dawson, Troy. "Development of a xenon polarizer for magnetometry in neutron electric dipole moment experiments." 2013. http://hdl.handle.net/1993/21694.

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Next generation electric dipole moment experiments require precise knowledge of the local magnetic fields in the experimental volume. Hyperpolarized xenon-129 has been proposed as a comagnetometer gas to be used in the neutron electric dipole moment experiment planned for TRIUMF. A flow through xenon polarizer was constructed and tested, and the hyperpolarized Xe-129 produced was transported to and characterized using a new AFP-NMR spectrometer. The polarization measured in the external AFP-NMR spectrometer was (12 ± 4)%. The longitudinal spin relaxation time T1 was found to be (77 ± 24) s in the experimental NMR volume, limited by leaks and field inhomogeneity. This represents good progress towards the eventual system for nEDM experiments where polarizations greater than 50% and T1, T2 relaxation times greater than 1000 s are expected.
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Book chapters on the topic "NMR magnetometry"

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Espy, Michelle, Igor Savukov, and Petr Volegov. "CHAPTER 7. Detection Using SQUIDs and Atomic Magnetometers." In Mobile NMR and MRI, 183–224. Cambridge: Royal Society of Chemistry, 2015. http://dx.doi.org/10.1039/9781782628095-00183.

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Bevilacqua, G., V. Biancalana, Y. Dancheva, and L. Moi. "Optical Atomic Magnetometry for Ultra-Low-Field NMR Detection." In Annual Reports on NMR Spectroscopy, 103–48. Elsevier, 2013. http://dx.doi.org/10.1016/b978-0-12-404716-7.00003-1.

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Zheng, Huijie, Arne Wickenbrock, Georgios Chatzidrosos, Lykourgos Bougas, Nathan Leefer, Samer Afach, Andrey Jarmola, et al. "Novel Magnetic-Sensing Modalities with Nitrogen-Vacancy Centers in Diamond." In Engineering Applications of Diamond. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.95267.

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In modern-day quantum metrology, quantum sensors are widely employed to detect weak magnetic fields or nanoscale signals. Quantum devices, exploiting quantum coherence, are inevitably connected to physical constants and can achieve accuracy, repeatability, and precision approaching fundamental limits. As a result, these sensors have shown utility in a wide range of research domains spanning both science and technology. A rapidly emerging quantum sensing platform employs atomic-scale defects in crystals. In particular, magnetometry using nitrogen-vacancy (NV) color centers in diamond has garnered increasing interest. NV systems possess a combination of remarkable properties, optical addressability, long coherence times, and biocompatibility. Sensors based on NV centers excel in spatial resolution and magnetic sensitivity. These diamond-based sensors promise comparable combination of high spatial resolution and magnetic sensitivity without cryogenic operation. The above properties of NV magnetometers promise increasingly integrated quantum measurement technology, as a result, they have been extensively developed with various protocols and find use in numerous applications spanning materials characterization, nuclear magnetic resonance (NMR), condensed matter physics, paleomagnetism, neuroscience and living systems biology, and industrial vector magnetometry. In this chapter, NV centers are explored for magnetic sensing in a number of contexts. In general, we introduce novel regimes for magnetic-field probes with NV ensembles. Specifically, NV centers are developed for sensitive magnetometers for applications where microwaves (MWs) are prohibitively invasive and operations need to be carried out under zero ambient magnetic field. The primary goal of our discussion is to improve the utility of these NV center-based magnetometers.
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Conference papers on the topic "NMR magnetometry"

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Martin, R. V., D. J. Nazarre, and E. A. Perigo. "Traceability of dynamic magnetic fields by NMR magnetometry." In 2014 Conference on Precision Electromagnetic Measurements (CPEM 2014). IEEE, 2014. http://dx.doi.org/10.1109/cpem.2014.6898406.

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Gavasheli, Tsisana, Zurab Shermadini, Giorgi Ghvedashvili, Saba Suladze, Grigor Mamniashvili, Tatiana Gegechkori, and Leri Rukhadze. "Magnetometry and NMR Study of Carbon Nanopowders Doped with Cobalt Nanoclusters and Self-assembly of their Polymer Nanocomposites under Magnetic Field." In 2018 XXIIIrd International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED). IEEE, 2018. http://dx.doi.org/10.1109/diped.2018.8543315.

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Martin, Ramon Valls, and Diogo Joriro Nazarre. "Improved NMR magnetometer for weak fields." In 2016 Conference on Precision Electromagnetic Measurements (CPEM 2016). IEEE, 2016. http://dx.doi.org/10.1109/cpem.2016.7540526.

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Begus, S., and D. Fefer. "DDS Based NMR Magnetometer in Slovenian Calibration Laboratory." In 2004 Conference on Precision electromagnetic Digest. IEEE, 2004. http://dx.doi.org/10.1109/cpem.2004.305273.

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Weyand, Kurt, Joachim Ludke, and Heiko Ahlers. "Error Analysis of Energy Absorption based NMR-Magnetometer." In 2004 Conference on Precision electromagnetic Digest. IEEE, 2004. http://dx.doi.org/10.1109/cpem.2004.305274.

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Chunli Wu, Fengchao Lv, and Ying Chen. "A new control method to generate RF signal for a novel NMR magnetometer." In 2012 24th Chinese Control and Decision Conference (CCDC). IEEE, 2012. http://dx.doi.org/10.1109/ccdc.2012.6244441.

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Belfi, J., G. Bevilacqua, V. Biancalana, S. Cartaleva, Y. Dancheva, K. Khanbekyan, and L. Moi. "Application of a differential optical atomic magnetometer to ultra-low field NMR detection." In 11th European Quantum Electronics Conference (CLEO/EQEC). IEEE, 2009. http://dx.doi.org/10.1109/cleoe-eqec.2009.5192128.

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Narkhov, E. D., V. A. Sapunov, A. U. Denisov, and D. V. Savelyev. "Novel quantum NMR magnetometer non-contact defectoscopy and monitoring technique for the safe exploitation of gas pipelines." In ENERGY AND SUSTAINABILITY 2014. Southampton, UK: WIT Press, 2014. http://dx.doi.org/10.2495/esus140571.

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Ushakov, V. A., A. Y. Denisov, A. V. Sergeev, E. D. Narkhov, and V. A. Sapunov. "Geomagnetic field NMR relaxometer to monitor the working substance, sensor and electronics of the POS-1 Overhauser magnetometer." In PHYSICS, TECHNOLOGIES AND INNOVATION (PTI-2019): Proceedings of the VI International Young Researchers’ Conference. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5134412.

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Barrera, Carola, T. Gould, K. Hyde, G. Montero, J. P. Hinestroza, and C. Rinaldi. "Electrospun Magnetic Nanofibers With Anti-Counterfeiting Applications." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-82899.

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Polyethylene oxide (PEO) nanofibers containing discrete magnetic domains have been produced using both parallel plate and syringe-plate electrospinning configurations. Magnetite nanoparticles from a commercial ferrofluid (MSG W11, Ferrotech Corporation) were suspended in 1–2 wt% PEO-in-water solutions and electrospun to produce fibers with diameters as small as 150 nm. Transmission electron microscopy was used to study particle agglomeration in the resulting nanofibers as a function of particle loading and electrospinning conditions. Magnetic measurements using a SQUID magnetometer were used to characterize the DC and AC magnetic response of the fibers. Applications to anti-counterfeiting in the textile industry are discussed.
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