2 edition of Electron paramagnetic resonance studies of high-Tc superconductors and related Cu(TI) systems. found in the catalog.
Electron paramagnetic resonance studies of high-Tc superconductors and related Cu(TI) systems.
Mark R. Little
Written in English
|Contributions||Manchester Metropolitan University. Department of Chemistry.|
Electron Paramagnetic Resonance is a comprehensive text on the field of electron paramagnetic resonance, covering both the theoretical background and the results of experiment. This book is composed of eight chapters that cover theoretical materials and experimental data on ionic crystals, since these are the materials that have been most. A strong paramagnetic resonance signal characteristic of Cu/sup 2+/ ions in chemically bondx/sup 2/-y/sup 2/> states is observed in the high-T/sub c/approx. =90 K superconductor Y/sub /Ba/sub /CuO/sub x/. The line intensity of the ioniclike signal shows a deviation from Curie behavior at Tapprox. >T/sub c/.
We have earlier proposed models of preformed hole pairs based on the results of our electron paramagnetic resonance experiments. A hole doped in a cuprate superconductor causes ferromagnetic alignment of the spins of the holes of 4 Cu2+ ions of the plaquette (CuO)4 in which it enters. Spin alignments undergo oscillations from vertically upward to vertically downward of the Cited by: 1. We have measured electron paramagnetic resonance (EPR), resistivity, and dc susceptibility from 2 to K for the oxide high Tc superconductors (R)Ba2Cu3Oy (R=Y,Pr,Nd,Eu,Gd,Ho,Er,Tm, or Yb). Selected systems were doped with 3‐d ions (Cr,Mn,Fe,Ni,Co, or Zn) or 4‐f ions (Gd or Er) which presumably substitute for the Cu or R site, by: 2.
Alsawafta, Mohammed (), Ph.D. Optical properties of metallic nanoparticles and metallic nanocomposite materials; Rinaldi, Gino (), An X- and Q-band electron paramagnetic resonance study of Mn²⁺ in a single crystal of NH 4 Cl I in the temperature range K; Sun, Jiansheng (), Ph.D. Electron Tunneling into Y1Ba2Cu3O7 Thin Films.- Model for Field-Dependent Microwave Absorption in Granular High-Tc Superconductors.- The Tunneling Gaps of YBa2Cu3O x: High-Tc Superconductors.- Superconducting Pair Density from Specific Heat Measurements.- III High-Energy Spectroscopies.- Electron Energy-Loss Studies on High-Tc Superconductors
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X- and Q-band electron paramagnetic resonance studies have been carried out on a polycrystalline superconductor YBaNaCu3O7- delta (Y-Ba-Na-Cu-O) over the temperature range K.
High T c Superconductors and Related Transition Metal Oxides Coexistence of Order–Disorder and Displacive Behavior of KH 2 PO 4 and Analogs from Electron Paramagnetic Resonance. Dalal. Pages This book containing 30 articles written by highly reputed experts is dedicated to K.
Alex Müller on the occasion of his 80th. Among various techniques to study superconductivity, Electron Paramagnetic Resonance (EPR) spectrometers can be used to investigate its properties. Just after the discovery of high T c superconductors there was influx of publications using EPR spectrometers to investigate their properties.
Though meaningful results were reported, it was soon almost abandoned as no additional Cited by: 2. A detailed and systematic review of the EPR studies of high-T c superconductors and their related and parent systems are presented. The various EPR signals reported from the high-T c oxides and from their related cuprates are by: Electron Paramagnetic Resonance in Superconducting Cuprates.
Abstract. The way to a discovery of the high temperature superconductivity (HTSC) was started by Alex Müller with his study of partially covalent character of transition elements in oxides having perovskites structure by the electron paramagnetic resonance (EPR) : Boris I.
Kochelaev. This work presents a discussion on the study of high Tc superconductor properties with the electron paramagnetic resonance spectrometer. A large number of interesting and important results is presented in Chaps.
4 and 5 of Grigo-rashvily’s book. The experimental results in the two chap-ters have been published earlier. They do not describe the. This work presents a discussion on the study of high Tc superconductor properties with the electron paramagnetic resonance spectrometer.
A large number of interesting and important results is presented in Chaps. 4 and 5 of Grigorashvily’s book. The experimental results in the two chapters have been published by: 1.
A device meant as a supplement to a standard electron paramagnetic resonance spectrometer, permitting easy and accurate determination of the T c ‐onset critical temperature superconductors, has Author: David Shaltiel. Possible reasons behind the total absence of EPR signals from divalent copper ions in copper oxide superconductors and related “two-dimensional” antiferromagnetic insulators aCited by: Electron paramagnetic resonance (EPR) studies of high-temperature superconducting and nonsuperconducting Y-Ba-Cu-O compounds were performed.
The effect of different oxygen treatments on the EPR. Electron paramagnetic resonance (EPR) of Gd 3+, Eu 2+, and copper ions has been investigated in the high-T~ superconductor with YBa2Cu3Oy_~ structure.
In the past years, the typical high Tc superconductor YBa 2 Cu 3 O 6 has been extensively studied by many authors. And electron paramagnetic resonance (EPR) studies of rare-earth (Re 3+) ions in high-Tc oxide superconductors have attracted much interest because they can provide valuable information on spin-lattice relaxation, exchange interactions and the ground state properties of Re 3+ ions Author: Hui-Ning Dong, Hui-Ning Dong, Shao-Yi Wu, Jue Wang.
Publisher Summary Electron-paramagnetic-resonance (EPR) techniques are a valuable tool to study the local electronic and magnetic properties in high-T C superconductors and in the magnetically ordered and insulating parent compounds.
Most EPR measurements are carried out on localized magnetic by: 1. INTRODUCTION THE DISCOVERY OF superconductivity at temperature higher than 30 Kin Cu-Ba-La-0 system by Bednorz et al.
 have resulted in a new class of superconductors, having general formula ABZCu_(where A = rare earth atom Y, La etc., B = Ba, Sr etc. and 8 is a fractional number), which have critical temperatures above the boiling point Cited by: 9.
Abstract. We review the results of our recent studies of La 2–x Sr x CuO 4 cuprate superconductor using electron paramagnetic resonance (EPR). It is shown that the EPR of Mn 2+ doped into La 2–x Sr x CuO 4 (LSCO) provides an unique microscopic information concerning the magnetic, electronic and lattice properties of cuprates.
The main conclusions followed from these experiments are : A. Shengelaya, B. Kochelaev, K. Conder, H. Keller. And electron paramagnetic resonance (EPR) studies of rare-earth (Re3+) ions in high-Tc oxide superconductors have attracted much interest because they can provide valuable information on spin.
Electron paramagnetic resonance studies on YBa 2−x La y Cu 3 O n high-temperature superconductors G. Plesch 1 Journal of Materials Science Letters vol pages – ( Author: G. Plesch. The total absence of Cu2+ resonance signal in the compound (even in the unannealed crystals) is similar to what is seen in the original high T, La-Ba-Cu-O compounds in that no Cu2+ signal is observed.4 It is interesting to note that those materials (with the KZNiF4 structure) also Cited by: Electron Paramagnetic Resonance is a comprehensive text on the field of electron paramagnetic resonance, covering both the theoretical background and the results of experiment.
This book is composed of eight chapters that cover theoretical materials and experimental data on ionic crystals, since these are the materials that have been most. Abstract In the past years, the typical high Tc superconductor YBa 2 Cu 3 O 6 has been extensively studied by many authors.
And electron paramagnetic resonance (EPR) studies of rare-earth (Re 3+) ions in high-Tc oxide superconductors have attracted much interest because they can provide valuable information on spin-lattice relaxation, exchange interactions and the ground state properties of Re.
A strong microwave absorption at low magnetic fields is observed for a variety of metallic cuprates below their critical superconducting transition temperatures (T c) using conventional electron paramagnetic resonance (EPR) low-field microwave signal was investigated in the following high-temperature superconductors, YBa 2 Cu 3 O 7–x (T c = 95 K), GdBa 2 Cu 3 O 7–x (T c.We have measured electron paramagnetic resonance (EPR), electrical resistivity, and dc magnetic susceptibility from 2 K - K for the high Tc oxide superconductor EuBa2Cu3O9-x, either undoped or doped with 3d ions (Cr, Mn, Fe, Ni, Co, or Zn), which presumably substitute at the Cu by: Electron Paramagnetic Resonance (EPR) and Hyperfine Interaction Methods may be applied indirectly for these purposes, by analyzing off beam electron or gamma quanta irradiated samples, searching for evidences of vacancies or other point defects induced on this way (Lancaster, ; Jin et al., ).