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Friday, April 24, 2020 | History

2 edition of Cu NQR and NMR study of metal-substituted YBa Cu O and YBa Cu O found in the catalog.

Cu NQR and NMR study of metal-substituted YBa Cu O and YBa Cu O

Show-Jye Cheng

Cu NQR and NMR study of metal-substituted YBa Cu O and YBa Cu O

  • 371 Want to read
  • 13 Currently reading

Published .
Written in English

    Subjects:
  • Superconductivity.,
  • Copper oxide superconductors -- Structure.

  • Edition Notes

    Statementby Show-Jye Cheng.
    The Physical Object
    Pagination95 leaves, bound. :
    Number of Pages95
    ID Numbers
    Open LibraryOL15417105M

      The plants were washed, dried, and burned at °C for 24 h in a drying oven. These ash and water samples were analyzed by ICP-MS to determine the amounts of Cu, Pb, Zn, and As. The Cu, Pb, Zn and As concentrations in the gallery water of the study area detec , , and 96 μg L(-1), by: 4/4/ 2 The copper ion in solution must then gain electrons as it is reduced to copper metal. Cu 2+ (aq) + 2e-→ Cu (s) E°red = + V By adding the reactions together, you . Copper - Cu - Volume 3- The Carlos Diaz Symposium on Pyrometallurgy (book 1 and 2) [A.E.M. Warner, A.E.M. Warner, C.J. Newman, A. Vahed, D.B. George, P.J. Mackey, A. Warczok] on *FREE* shipping on qualifying offers. Copper - Cu - Volume 3- The Carlos Diaz Symposium on Pyrometallurgy (book 1 and 2). Cu(NO3)2 + Zn (s) → Cu (s) + Zn(NO3)2 is an example of which type of reaction? Combustion Decomposition Single-displacement Double-displacement.

    - RYGMFSIKBFXOCR-AKLPVKDBSA-N - Copper Cu - Similar structures search, synonyms, formulas, resource links, and other chemical information.


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Cu NQR and NMR study of metal-substituted YBa Cu O and YBa Cu O by Show-Jye Cheng Download PDF EPUB FB2

Graduate Thesis Or Dissertation Cu NQR and NMR study of metal-substituted YBa Cu O and YBa Cu O Public Deposited. Analytics × Add to Author: Show-Jye Cheng.

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Introduction. Nuclear magnetic resonance (NMR) and nuclear quadrupole resonance (NQR) techniques have played key roles in characterizing various imperfections in metals and have been applied to dilute magnetic alloys or impurity-substituted high-T c cuprate superconductors.For high-T c superconductors YBa 2 Cu 3 O 7−δ (Y) with optimal T c ∼92 K, the satellite lines of Cu NQR Cited by: Cu NQR and NMR study of metal-substituted YBa Cu O and YBa Cu O book.

Teplov M.A. et al. () Tm NMR and Cu NQR Studies of Phase Separation in TmBaCuO Compounds. In: Kaldis E., Liarokapis E., Müller K.A.

(eds) High-Tc Superconductivity Ten Cited by: 2. We present a study of shape of the Cu(2) NQR spectra in YBa 2 Cu 3 O 7, TmBa 2 Cum 3 O 7, and TmBa 2 Cu 4 O 8 compounds at temperatures of – K.

The results of the quantitative analysis lead us to conclude that the shape of the Cu(2) NQR spectra in all the samples studied can be described in the framework of the “motional narrowing” model, which implies that the Cu(2) nucleus Author: V. Dooglav, A. Egorov, E. Krjukov, Yu. Sakhratov, M.

Teplov, Yu. User Account. Log in; Register; Help; Take a Tour; Sign up for a free trial; SubscribeCited by: 6. Nuclear resonance shift in the vortex lattice in YBa_ {2} Cu_ {3} O_ {7} Article (PDF Available) in Physical review. B, Condensed matter 66(13) October with 22 Cu NQR and NMR study of metal-substituted YBa Cu O and YBa Cu O book.

Antiferromagnetic properties of a water-vapor-inserted YBa 2 Cu 3 O compound studied by NMR, NQR, and ␮ SR Article (PDF Available) October with 72 Reads How we measure 'reads'. 1 H NMR analysis (see Figure 2) of the isolated product revealed the well known reorientation Cu NQR and NMR study of metal-substituted YBa Cu O and YBa Cu O book the interlocked rings relative to one another that occurs upon demetalation.

1a-c The phenyl protons (H o and H m, Figure 2) attached to the phen moieties move downfield revealing that the two chelates are no longer entwined around the Cu(I) upfield shifts observed for prorons Cited by: Bioavailability Study of Nine (Mn, Fe, Cu, Zn, Pb, Cr, Ni, Cd, Co) Heavy Metals in Four Edible Vegetables and a Crop Using AAS and EDS Kalagbor I.

A.1, Emmanuel S. A.2, Oyewole D. O.3 1Department of Science Laboratory Technology, School of Applied Sciences Rivers State Polytechnic, Bori, Rivers State, Nigeria. We present results of [sup 17]O and [65]Cu nuclear magnetic resonance (NMR) and nuclear quadrupolar resonance (NQR) studies in the normal and superconducting state of the K superconductor YBa[sub 2]Cu[sub 4]O[sub 8].

The various components of the Cu and O Knight-shift tensors show strong but similar temperature dependences over the. If the address matches an existing account you will receive an email with instructions to reset your password.

The room-temperature 63 Cu NQR spectrum of YBa 2 Cu 3 O x presented in Fig. consists of one line at MHz arising from Cu(1) in the chains and another at MHz arising from Cu(2) in the basal plane (Vega et al., a).

The 65 Cu isotope produces NQR lines. Given similar NMR features in other YBCO materials, and preliminary experiments on YBa 2 Cu 4 O 8 and YBa 2 Cu 3 O 7 that also show increasing linewidths with pressure, this charge ordering appears to be the missing link that explains why only a few cuprates have narrow NMR lines, and why linewidths can depend on the method of preparation, or Cited by: 4.

A series of transition metal complexes of Cu(II), Ni(III) Zn(II), Cd(II), Co(II), Sb(III) and Fe(III)Containing Bidentate Schiff base, [NI-(4-chloro-benzylidene)-hydrazecarbodithioicacid methyl ester] derived from the condensation of S- methyldithiocarbazate and P-chlorobenzaldehyde were synthesized and characterized by IR, UV- Vis., and some physical measurements.

significant difference in Cu concentrations among different soil fractions is found (Table ). BCR defined as the concentration of the element (mg kg and. CdChapter 4 Transition Metals Cr, Co, Ni, Cu, Zn, Cd, Hg, and Pb. The Table of Contents for the full book PDF is as follows: * Preface and Scope * Frustrated Phase Separation and High Temperature Superconductivity * Phase Separation and Photo-Induced High Tc Superconductivity in the Cuprates * Neutron Scattering Studies of the Spin Dynamics in La2-xSrxCuO4 * Percolative Phase Cited by:   Pinning Centers in C-Axis Oriented Bi-Sr-Ca-Cu-O Thin Films (G Jung et al) The Effect of an Electric Current on Microwave Absorption in a YBaCuO Ceramic Superconductor (J Stankowski et al) and other papers; Readership: Condensed matter physicists, electronic and.

The Table of Contents for the full book PDF is as follows: * Organizing Committee * Foreword * Invited Lectures * Critical currents in neutron irradiated high temperature superconductors * Radiation induced disorder as a unique method for studying electronic states of HTSC's and modifying their properties * Influence of fast neutron irradiation on various types of HTSC Cited by: 2.

2Cr 3+ + 10 OH-+ 3 H 2 O 2 ® 2CrO 4 2-+ 8 H 2 O or 2 CrCl 3 + 10 NaOH + 3 H 2 O 2 ® 2 Na 2 CrO 4 + 8 H 2 O + 6 NaCl Cr 3+: Add an excess of NaOH solution and some H 2 O 2.

Heat the resulting mixture. Filter the solution and observe the color of the filtrate. If it is yellow, you have CrO 4 2- ion in filtrate. Cu NQR study on transverse relaxation rate below Tc in YBa 2 CuO 7 M.

Tei, H. Takai, K. Mizoguchi, and K. Kume Z. Naturforsch. 45a, (). 89 Y NMR study of exchange coupling constant between CuO 2 layer and Gd ion in Gd x Y 1-y Ba 2 Cu 3 O 7-y H.

Sakamoto, M. Tei, H. Takai, K. Mizoguchi, and K. Kume Phys. Rev. B 41, (). The surface Cu flake particle generation mechanism during Cu Chemical Mechanical Planarization (CMP) process was studied to propose optimal tribological conditions.

Cu flake defects are the main impact on yield and reliability in Logic Devices. Fig.1 shows typical Cu. 12O acetate using proton NMR echo”,lfari, e chi, 84, () 40) “Superconducting fluctuations and anomalous diamagnetism in underdoped YBa 2Cu 3O 6+x from magnetization and 63Cu NMR-NQR.

UV/Vis spectra of mb during a titration with Cu(II), and illustrates that the behavior that we are seeing with NMR spectroscopy mirrors that which has been published by others.

Choi et al., have reported that EPR spectroscopy shows that for Cu:mb ratios up to Cu:mb, all of the added Cu(II) binds to mb and is reduced to Cu(I). Effect of oxygen on intergrain critical currents 3. Results and discussion In figure 1, we show the real (2') and imaginary (,f) parts of AC susceptibility as functions of temperature and field amplitude for the YBa,Cu,O, sample which was quenched from °C.

Two transitions, one at. NMR experiments are reported for Sr 2 CuO 2 Cl 2, HgBa 2 CuO 4+d, YNi 2 B 2 C and YBa 2 Cu 3 O studies typify three different aspects of microscopic properties of HTSC. In non-superconducting antiferromagnetic (AF) prototype Sr 2 CuO 2 Cl 2, we used NMR to investigate Cu 2+ correlated spin dynamics and AF phase transition in CuO 2 layers.

In the superconductors, we used NMR both to. copper (Cu), iron (Fe), manganese (Mn), lead (Pb), nickel (Ni) and cadmium (Cd). Fiber board is the main product that is produced by one of the factories in the Parit Raja industrial area. Use of heavy metals can be perceived in the treatments of the timber.

Zn and Cu are used in chemical solution, where timbers absorb this solution well [11]. Question: Determine The Coordination Number Of The Metal Ion In [Cr(H2O)6]3+ Determine The Oxidation State Of The Metal Ion In [Co(NH3)3Cl3]?.

Determine The Coordination Number Of The Metal Ion In [Co(NH3)3Cl3]. Determine The Oxidation State Of The Metal Ion In [Cu(CN)4]2?. Determine The Coordination Number Of The Metal Ion In [Cu(CN)4]2?. Im having trouble with the following question as I missed it during class: Of Sn 2+, Ag +, and/or Zn 2+, which could be reduced by Cu.

Ag+ B. Sn2+ C. Zn2+ D. All of them could be reduced by Cu. Two of them could be reduced by Cu. Thanks for help. Abstract. The 35 Cl NQR spin-lattice relaxation time T 1Q, spin-spin-relaxation time T 2Q, and 1 H NMR spin-lattice relaxation time in the rotating frame T 1Q in Mg(H 2 O) 6 SnCl 6 were measured as functions of temperature.

Above room temperature T 2Q increased rapidly with increasing temperature, which can be explained by fluctuations of the local magnetic field at the chlorine nuclei Author: Keizo Horiuchi, Daiyu Nakamura. c o J6/7 UyocA~' U" ~ UAAGGs, ~c G P6 J3/4 AA C \ouo uA co P6a CG U A n AA ~Q u[ J6a/6b UA ca AU AO P6b CO AU GC A U UcU CU G U il0G" c, uO; G U C--G P5 Helix FIG.

Divalent metal ion binding sites characterized by NMR studies and derived from the P5 junc-File Size: 1MB. Cu-Cr-OandCu-Ce-ORegenerableOxideSorbentsforHotGas Desulfurization ZhijiangLiandMariaFlytzani-Stephanopoulos* DepartmentofChemicalEngineering,TuftsUniversity,Medford.

The type B cuprates behave quite differently in NMR, as can be seen in experiments on underdoped YBa x Cu y O 7−z (YBCO) samples. The stoichiometric underdoped double chain compound YBa 2 Cu 4 O 8 (Y) is particularly interesting, as it is an ordered compound with fractional hole doping of the CuO 2 by: 3.

The temperature dependence of the 63/65 Cu-NMR relaxation rate T and the spectrum of the lightly doped high-T c cuprate La Ca Cu 2 O 6+δ (La) with bilayer CuO planes have been studied.

The field-swept spectrum was explained by assuming that there are two Cu sites with quadrupole frequencies of 63 νΩ = and 32 MHz.

The Knight shift decreased monotonically with Cited by: 2. At variance with typical 3d systems such as orthoferrites, the cuprates are characterized by a low-dimensionality, large diversity of Cu-O-Cu bonds including corner- and edge-sharing, different ladder configurations, strong quantum effects for the s = 1 / 2 Cu 2 + centers, and a particularly strong Cu-O covalency resulting in a comparable Author: Alexander Moskvin.

NMR Study of Magnetic Structure in α-CoV 2 O 6 Yu Kawasaki, Hiro Mori, Yutaka Kishimoto, Koichi Nakamura, Zhangzhen He, and Mitsuru Itoh/JPSCP The application of the nuclear resonance methods to the investigation of the high temperature superconductors is reviewed shortly.

Copper NMR and NQR in the non-metallic YBa 2 Cu 3 O and thallium NMR in the multiphase oxide superconductor of nominal composition Tl 2 BaCa 2 Cu 3 O x is discussed in detail.

Start studying Elements H, He, Li, Be, B, N, C, O, F, Ne, Na, Mg, Al, Si, P, S, Cl, Ar, Rb, Sr, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, As, Se, Br, Kr.

Fe is the reducing agent, Cu is the reducing agent, Cu= is the redcing agent, or fe2+ is the reducing agent. This results in a material with a composition of Ba 2 Cu 3 O x (. Read "Synthesis, spectroscopic and pdf characterization of (Cu(phen)(C 5 O 5)(H 2 O))H 2 Pdf, (Ni(terpy)(C 5 O 5)(H 2 O))H 2 O and (Ni(terpy) 2)(NO 3) 2 H 2 O, Journal of Molecular Structure" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.1 Phases found at grain boundary of YBa 2Cu 3O 7-δ 50 nm films on SrTiO3 by enhanced anomalous scattering at O:K, Cu:L 2,3 and Ba:M 4,5 edges J.V.

Acrivos* SJSU, CA Dedicated to Nevill Francis Mott, mentor to condensed matter scholars on th Author: Juana Vivó Acrivos.Book example Reducing Cu 2 O to Cu is a highly non spontaneous reaction Cu 2 O from at Rutgers University.