Published November 1, 2004 | Version v1
Journal article Metadata-only

A comparative Moessbauer study of the Nd1+xBa2-x(Cu0.9757Fe0.03)3Oz solid solution: the role of low-temperature treatment

Creators

  • 1. Faculty of Materials Science, Moscow State University, Lenin Hills, Moscow 119992 (Russian Federation)
  • 2. Department of Chemistry, Moscow State University, Lenin Hills, Moscow 119992 (Russian Federation)

Description

Local structure features of the Nd1+xBa2-x(Cu0.9757Fe0.03)3Oz solid solution with various oxygen contents and cation compositions were examined for the first time by Moessbauer spectroscopy to explore the effects of cation disorder in the cases of the anomalous pseudocubic x = 0 phase, the x = 0.6 tetragonal solid solution with Nd stochastically substituting Ba and also the x = 0.9 orthorhombic phase with superstructurally ordered Nd and Ba. A new spectral component characterized by an isomer shift δ = 0 mm s-1 and quadrupole splitting Δ = 0 mm s-1 was found for all the cases, evidencing the formation of associated defects such as 'Fe(IV)Cu1O6-NdBa' and confirming antistructural disordering of Nd3+ and Ba2+ in low-Tc NdBa2Cu3Oz samples

Availability note (English)

Available online at http://stacks.iop.org/0953-2048/17/1353/sust4_11_019.pdf or at the Web site for the journal Superconductor Science and Technology (ISSN 1361-6668) http://www.iop.org/

Additional details

Identifiers

URL
http://stacks.iop.org/0953-2048/17/1353/sust4_11_019.pdf; http://www.iop.org/;
DOI
10.1088/0953-2048/17/11/019;
PII
S0953-2048(04)81602-6;

Publishing Information

Journal Title
Superconductor Science and Technology
Journal Volume
17
Journal Issue
11
Journal Page Range
p. 1353-1360
ISSN
0953-2048
CODEN
SUSTEF

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
36037286
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
BARIUM COMPOUNDS; BARIUM IONS; CATIONS; COMPARATIVE EVALUATIONS; CRYSTAL DEFECTS; CUPRATES; HIGH-TC SUPERCONDUCTORS; IRON 57; IRON COMPOUNDS; ISOMER SHIFT; MOESSBAUER EFFECT; NEODYMIUM COMPOUNDS; NEODYMIUM IONS; OXYGEN; SOLID SOLUTIONS; TRANSITION TEMPERATURE
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CHARGED PARTICLES; COPPER COMPOUNDS; CRYSTAL STRUCTURE; DISPERSIONS; ELEMENTS; EVALUATION; EVEN-ODD NUCLEI; HOMOGENEOUS MIXTURES; INTERMEDIATE MASS NUCLEI; IONS; IRON ISOTOPES; ISOTOPES; MIXTURES; NONMETALS; NUCLEI; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SOLUTIONS; STABLE ISOTOPES; SUPERCONDUCTORS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; TYPE-II SUPERCONDUCTORS