Wyniki wyszukiwania dla: FRUSTRATED MAGNETS

• JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

  Czasopisma

  ISSN: 0304-8853 , eISSN: 1873-4766

• Application of nonmetallic frustrated cations in the activation of small molecules

  Publikacja

  • K. Kaniewska-Laskowska
  • M. Czapla
  • J. Chojnacki
  • R. Grubba

  - DALTON TRANSACTIONS - Rok 2023

  The concept of nonmetallic frustrated cations has been used in small molecule activation. The in situ generated ambiphilic phosphinoborinium cation activated phenyl isocyanate, diisopropylcarbodiimide, and acetonitrile under very mild conditions without any catalyst, yielding single-, double-, or mixed-activation products. Furthermore, the mechanisms of the reactions of the phosphinoborinium cation with small molecules were elucidated...

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• Magnetic instrumentation and other applications of magnets in NOTES

  Publikacja

  • J. Kobiela
  • S. Grymek
  • M. Wojanowska
  • M. Łubniewski
  • W. Makarewicz
  • S. Dobrowolski
  • A. Łachiński
  • Z. Śledziński

  - Wideochirurgia i Inne Techniki Maloinwazyjne - Rok 2012

  Modern surgery is developing towards a minimally invasive approach. To minimize the trauma the number of ports is either limited as in single incision laparoscopic procedures or ports are introduced through natural orifices as in nat- ural orifice translumenal endoscopic surgery (NOTES). To provide surgeons with appropriate instrumentation novel technologies are employed involving magnets. This article summarizes the theoretical...

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• IEEE TRANSACTIONS ON MAGNETICS

  Czasopisma

  ISSN: 0018-9464 , eISSN: 1941-0069

• Chemical Pressure Tuning Magnetism from Pyrochlore to Triangular Lattices

  Publikacja

  • R. S. Dissanayaka Mudiyanselage
  • T. Klimczuk
  • D. Ni
  • R. J. Cava
  • W. Xie

  - INORGANIC CHEMISTRY - Rok 2022

  Geometrically frustrated lattices combined with magnetism usually host quantum fluctuations that suppress magnetic orders and generate highly entangled ground states. Three-dimensionally (3D) frustrated magnets generally exist in the diamond and pyrochlore lattices, while two-dimensionally (2D) frustrated geometries contain Kagomé, triangular, and honeycomb lattices. In this work, we reported using chemical pressure to tune the magnetism...

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• Diphosphination of CO2 and CS2 mediated by frustrated Lewis pairs - catalytic route to phosphanyl derivatives of formic and dithioformic acid

  Publikacja

  • N. Szynkiewicz
  • Ł. Ponikiewski
  • R. Grubba

  - CHEMICAL COMMUNICATIONS - Rok 2019

  The first example of CO2 diphosphination is described. Reactions of unsymmetrical diphosphanes with CE2 (E = O, S) catalyzed by BPh3 insert a CE2 molecule into the P-P bond with formation of the products of the general formula R2P-E-C(=E)-PR2. The obtained CO2 adducts arise from synergistic interaction of diphosphane and borane with CO2 molecule.

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• Reactivity of bulky aminophosphanes towards small molecules: Activation of dihydrogen and carbon dioxide by aminophosphane/borane frustrated Lewis pairs

  Publikacja

  • M. Siedzielnik
  • K. Kaniewska-Laskowska
  • N. Szynkiewicz
  • J. Chojnacki
  • R. Grubba

  - POLYHEDRON - Rok 2021

  A series of mono- and bisaminophosphanes with formulas R2NPR’R’’ and (R2N)2PR’ (R = iPr, Cy; R’ = Ph, Cy; R’’ = iPr) were characterized by X-ray analysis, NMR spectroscopy and computational methods. The common structural futures of these species are short and polarized PAN bonds, a pyramidal geometry at the P atom and an almost planar geometry at the N atoms. According to DFT calculations, these...

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• Diphosphinoboranes as Intramolecular Frustrated Lewis Pairs: P–B–P Bond Systems for the Activation of Dihydrogen, Carbon Dioxide, and Phenyl Isocyanate

  Publikacja

  • N. Szynkiewicz
  • A. Ordyszewska
  • J. Chojnacki
  • R. Grubba

  - INORGANIC CHEMISTRY - Rok 2021

  Herein, we present the first example of the activation of small molecules by P-B-P bond systems. The reactivity study involves reactions of two selected diphosphinoboranes, (tBu2P)2BPh (1’) and (Cy2P)2BNiPr2 (2), that differ in terms of their structural and electronic properties for the activation of dihydrogen, carbon dioxide, and phenyl isocyanate. Diphosphinoborane 1’ activates H2 under very mild conditions in the absence of...

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• Influence of proton irradiation on the magnetic properties of two-dimensional Ni(II) molecular magnet

  Publikacja

  • M. Perzanowski
  • D. Czernia
  • P. Konieczny
  • E. Juszyńska-Gałązka
  • J. Lekki

  - Scientific Reports - Rok 2023

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• MAGNETIC RESONANCE IN CHEMISTRY

  Czasopisma

  ISSN: 0749-1581 , eISSN: 1097-458X

• Carnets

  Czasopisma

  eISSN: 1646-7698

• Activation of N2O and SO2 by the P–B Bond System. Reversible Binding of SO2 by the P–O–B Geminal Frustrated Lewis Pair

  Publikacja

  • N. Szynkiewicz
  • J. Chojnacki
  • R. Grubba

  - INORGANIC CHEMISTRY - Rok 2020

  Herein, we present the first transformation of borylphosphine into borylphosphinite using nitrous oxide. Borylphosphine reacts with N2O via insertion of a single oxygen atom into the P−B bond and formation of a P−O−B bond system. Borylphosphine and borylphosphinite capture SO2 and activate it in an irreversible and reversible manner, respectively.

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• Horizontally-split-drain MAGFET - a highly sensitive magnetic field sensor

  Publikacja

  • W. Kordalski
  • M. Polowczyk
  • M. Panek

  - Bulletin of the Polish Academy of Sciences-Technical Sciences - Rok 2007

  We propose a novel magnetic field sensitive semiconductor device, viz., Horizontally-Split-Drain Magnetic-Field Sensitive Field-Effect Transistor (HSDMAGFET) which can be used to measure or detect steady or variable magnetic fields. Operating principle of the transistor is based on one of the galvanomagnetic phenomena and a Gradual Channel Detachment Effect (GCDE) and is very similar to that of Popovic and Baltes's SDMAGFET. The...

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• The influence of a strong external magnetic field from a permanent magnet on a measurement accuracy of an inductive watt-hour meter

  Publikacja

  • E. Pawłowski

  - Przegląd Elektrotechniczny - Rok 2016

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• Testing of the Superconducting Magnets Frequency Characteristics

  Publikacja

  • D. Świsulski
  • M. Wołoszyk
  • M. Wołoszyn
  • M. Ziółko
  • L. Rafiński
  • A. Stafiniak

  - Elektronika Ir Elektrotechnika - Rok 2010

  Przedstawiono zagadnienia związane z opracowaniem systemu do wyznaczania impedancji uzwojeń magnesów nadprzewodzących w funkcji częstotliwości. Omówiono strukturę sprzętową systemu, oprogramowanie oraz sposób wyznaczania parametrów badanego uzwojenia. Pokazano przykładowe wyniki uzyskane przy użyciu omawianego systemu w GSI w Darmstadt.

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• Journal of Magnetics

  Czasopisma

  ISSN: 1226-1750 , eISSN: 2233-6656

• Electronic Markets

  Czasopisma

  ISSN: 1019-6781 , eISSN: 1422-8890

• Magnetic Resonance

  Czasopisma

  ISSN: 2699-0059 , eISSN: 2699-0016

• Evaluation by means of magneto-acoustic emission and Barkhausen effect of time and space distribution of magnetic flux density in ferromagnetic plate magnetized by a C-core

  Publikacja

  • M. Augustyniak
  • B. Augustyniak
  • L. Piotrowski
  • M. Chmielewski
  • W. Sadowski

  - JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS - Rok 2006

  Pokazano wyniki badań emisji magnetoakustycznej (EMA) i efektu Barkhausena (HEB) dla dwóch płyt stalowych o różnych wymiarach. Wyniki te są porównane z wynikami modelowania zjawiska EMA z wykorzystaniem metody elementów skończonych z uwzględniem efektu prądów wirowych. Uzyskano zadawalające dopasowanie modelu, który odtwarzał poszerzenie maksimum EMA oraz przesunięcie fazowe i zmianę amplitudy HEB.

• Evidence for SrHo2O4 and SrDy2O4 as model J1- J2 zigzag chain materials

  Publikacja

  • A. Fennell
  • V. Y. Pomjakushin
  • A. Uldry
  • B. Delley
  • B. Prévost
  • A. Désilets-Benoit
  • A. D. Bianchi
  • R. I. Bewley
  • B. R. Hansen
  • T. Klimczuk... i 2 innych

  - PHYSICAL REVIEW B - Rok 2014

  Neutron diffraction and inelastic spectroscopy is used to characterize the magnetic Hamiltonian of SrHo2O4 and SrDy2O4. Through a detailed computation of the crystal-field levels we find site-dependent anisotropic single-ion magnetism in both materials, and diffraction measurements show the presence of strong one-dimensional spin correlations.Our measurements indicate that competing interactions of the zigzag chain, combinedwith...

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• ANTIMICROBIAL AGENTS AND CHEMOTHERAPY

  Czasopisma

  ISSN: 0066-4804 , eISSN: 1098-6596

• Magnetic anisotropy and structural flexibility in the f ield-induced single ion magnets [Co{(OPPh2) (EPPh2)N}2], E = S, Se, explored by experimental and computational methods

  Publikacja

  • E. Ferentinos
  • D. Tzeli
  • S. Sottini
  • E. J. Groenen
  • M. Ozerov
  • G. Poneti
  • K. Kaniewska-Laskowska
  • J. Krzystek
  • P. Kyritsis

  - DALTON TRANSACTIONS - Rok 2023

  During the last few years, a large number of mononuclear Co(II) complexes of various coordination geometries have been explored as potential single ion magnets (SIMs). In the work presented herein, the Co(II) S = 3/2 tetrahedral [Co{(OPPh2)(EPPh2)N}2], E = S, Se, complexes (abbreviated as CoO2E2), bearing chalcogenated mixed donor-atom imidodiphosphinato ligands, were studied by both experimental and computational techniques. Specifically,...

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• Magnetic disturbances caused by magnetic contamination of plastics

  Publikacja

  • K. Jakubiuk
  • M. Wołoszyn
  • M. Chomnicki
  • J. Łubkowski

  - Przegląd Elektrotechniczny - Rok 2015

  In the study of low magnetic fields precision magnetometers working in a differential system are used. Two optically pumped magnetometers working in a differential system allow for precise measuring of disturbances in the magnetic field. In order to attain high accuracy of magnetic field measurement, it is necessary to use appropriate materials for the construction of a magnetometric system, particularly of those located closely...

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• Crystal Growth, Structure, and Magnetism of the 2D Spin 1/2 Triangular Lattice Material Rb3Yb(PO4)2

  Publikacja

  • S. Guo
  • R. Zhong
  • K. Górnicka
  • T. Klimczuk
  • R. J. Cava

  - CHEMISTRY OF MATERIALS - Rok 2020

  The single-crystal growth, crystal structure, heat capacity, and anisotropic magnetization characterization of Rb3Yb- (PO4)2, a Yb-based triangular lattice material, are presented. Single-crystal X-ray diffraction shows that Rb3Yb(PO4)2 exhibits [Yb(PO4)]∞ layers, with the Yb in an ordered plane of equilateral triangles. One phosphate group oxygen that is not a near neighbor of the magnetic Yb displays positional disorder. The...

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• Journal of Energy Markets

  Czasopisma

  ISSN: 1756-3607 , eISSN: 1756-3615

• CARNETS DE GEOLOGIE

  Czasopisma

  ISSN: 1634-0744 , eISSN: 1765-2553

• Consumption Markets & Culture

  Czasopisma

  ISSN: 1025-3866 , eISSN: 1477-223X

• Emerging Markets Review

  Czasopisma

  ISSN: 1566-0141 , eISSN: 1873-6173

• IEEE Magnetics Letters

  Czasopisma

  ISSN: 1949-307X

• Journal of Commodity Markets

  Czasopisma

  ISSN: 2405-8513 , eISSN: 2405-8505

• Magnetic Resonance Insights

  Czasopisma

  ISSN: 1178-623X

• Performance Apparel Markets

  Czasopisma

  ISSN: 1477-6456

• Magnetic Resonance in Solids

  Czasopisma

  ISSN: 2072-5981

• MAGNETIC RESONANCE IN MEDICINE

  Czasopisma

  ISSN: 0740-3194 , eISSN: 1522-2594

• JOURNAL OF FINANCIAL MARKETS

  Czasopisma

  ISSN: 1386-4181 , eISSN: 1878-576X

• APPLIED MAGNETIC RESONANCE

  Czasopisma

  ISSN: 0937-9347 , eISSN: 1613-7507

• Credit and Capital Markets

  Czasopisma

  ISSN: 2199-1227 , eISSN: 2199-1235

• Insurance Markets and Companies

  Czasopisma

  ISSN: 2616-3551 , eISSN: 2522-9591

• JOURNAL OF FUTURES MARKETS

  Czasopisma

  ISSN: 0270-7314 , eISSN: 1096-9934

• Labor Markets

  Publikacja

  • B. Matta
  • G. Borjas
  • M. Tienda
  • A. Klimczuk

  - INDUSTRIAL & LABOR RELATIONS REVIEW - Rok 1987

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• Labor Markets

  Publikacja

  • A. Klimczuk

  - Rok 2017

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• Eu2Mg3Bi4: Competing Magnetic Orders on a Buckled Honeycomb Lattice

  Publikacja

  • M. Marshall
  • F. Wang
  • T. Klimczuk
  • R. S. Dissanayaka Mudiyanselage
  • M. Greenblatt
  • D. Walker
  • W. Xie

  - CHEMISTRY OF MATERIALS - Rok 2022

  The honeycomb lattice and its derived variants provide information on modeling and designing quantum magnets. A novel magnetic material, Eu2Mg3Bi4, which stabilizes in a previously unknown buckled honeycomb lattice, was discovered by high-pressure and high-temperature methods. We report here on the synthesis exploration of pure single crystals, structural determination of the buckled honeycomb lattice of europium moments, and experimental observation...

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• AC loss measurements in superconducting magnet

  Publikacja

  • P. Szwangruber

  - Rok 2008

  This report contains ordered theoretical informations about AC loss in superconducting magnets and cables. A software program to evaluate data from AC loss measurements with V-I method was made and it is also described. Examples of measurement data and result data are shown here.

• CONCEPTS IN MAGNETIC RESONANCE PART B-MAGNETIC RESONANCE ENGINEERING

  Czasopisma

  ISSN: 1552-5031 , eISSN: 1552-504X

• The Influence of Permanent Magnet Length and Magnet Type on Flux-control of Axial Flux Hybrid Excited Electrical Machine

  Publikacja

  • P. Paplicki
  • P. Prajzendanc

  - Rok 2018

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• Magneto-thermal convection of low concentration nanofluids

  Publikacja

  • A. Roszko
  • E. Fornalik-Wajs
  • J. Dionizak
  • J. Wajs
  • A. Kraszewska
  • Ł. Pleskacz
  • S. Kenjeres

  - MATEC Web of Conferences - Rok 2014

  The main aim of this paper was to analyze possible utilization of the low concentration nanofluids and the magnetic field to enhance heat transfer. The studied fluids were based on water with an addition of copper particles (40-60 nm diameter). They belonged to the diamagnetic group of materials. As a first attempt to stated target the analysis of enclosure placed in the maximal value of square magnetic induction gradient was carried...

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• Infectious Agents and Cancer

  Czasopisma

  ISSN: 1750-9378

• Anti-Infective Agents

  Czasopisma

  ISSN: 2211-3525

• Journal of Physical Agents

  Czasopisma

  ISSN: 1888-0258

• Magnetic Silica Nanotubes: Synthesis, Drug Release, and Feasibility for Magnetic Hyperthermia

  Publikacja

  • X. Chen
  • R. Klingeler
  • M. Kath
  • A. El
  • K. Cendrowski
  • R. Kalenczuk
  • E. Borowiak-Palen
  • E. Mijowska

  - ACS Applied Materials & Interfaces - Rok 2012

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