A new symmetric Fe3+ site (labelled E) (δ=0.28(2) mm/s and Δ=0.15 mm/s) is observed in the R1Ba2Cu3O7 family of superconductors for R=Y and Eu. The decay and growth of site E are established in two seemingly unrelated experiments, one as a function of room temperature aging for R=Y, and the other as a function of oxygen loading at elevated temperatures and pressures for R=Eu. In each experiment, the results show that site E is genetically related to the well documented chainsites A(Δ=1.9 mm/s), C(Δ=1.1 mm/s) and D(Δ=1.6 mm/s). We propose that site E represents a quasi-octahedral chain-site having pairs of O(1), O(4) and O(5) nearestneighbor oxygen sites. The two remaining doublets, B(Δ≈0.4 mm/s) and B′(Δ=0.78 mm/s) represent Fe3+ dopant sit...
Ossandon, J.G. Department of Engineering Sciences, Universidad de Talca, Curicó, Chile.Systematic st...
This study presents $\sp{17}$O NMR spectra of randomly and magnetically oriented samples of various ...
The authors investigate the tetragonal(T)-orthorhombic(O) transient zone of YBa2Cu3O6+x, in a compar...
A new symmetric Fe3+ site (labelled E) (δ=0.28(2) mm/s and Δ=0.15 mm/s) is observed in the R1Ba2Cu3O...
We have recorded 57Fe Mössbauer spectra of YBa2 (Cu1-yFey)3 O7-x powder sample and uniaxially orient...
Overdoped cuprates are attracting a renewed interest in searching for clues about the pairing mechan...
Includes bibliographical references (pages [45]-50)It is shown that Fe substituents in the Cul site ...
Bibliography: pages [33]-34.Mossbauer effect measurements at ⁵⁷Fe nuclei have been made at room temp...
Using a high resolution susceptometer based on a self-resonant tunnel diode circuit, the temperature...
Bibliography: pages [39]-41.⁵⁷Fe Mossbauer effect measurements have been performed at room temperatu...
Thermogravimetric curves of the superconducting samples (0.0≤δ<0.5) of YBa<SUB>2</SUB>Cu<SUB>3</S...
Thermogravimetric curves of the superconducting samples (0.0 ≤ δ left angle bracket0.5) of YBa2Cu3O7...
We report NMR measurements of the nuclear relaxation rate at all copper and oxygen sites in magnetic...
X-ray absorption spectra at the oxygen K edge using the total yield technique are reported for YBa2C...
One of the four quadrupole doublets (A, B, C, and D) observed in Mössbauer spectra of orthorhombic (...
Ossandon, J.G. Department of Engineering Sciences, Universidad de Talca, Curicó, Chile.Systematic st...
This study presents $\sp{17}$O NMR spectra of randomly and magnetically oriented samples of various ...
The authors investigate the tetragonal(T)-orthorhombic(O) transient zone of YBa2Cu3O6+x, in a compar...
A new symmetric Fe3+ site (labelled E) (δ=0.28(2) mm/s and Δ=0.15 mm/s) is observed in the R1Ba2Cu3O...
We have recorded 57Fe Mössbauer spectra of YBa2 (Cu1-yFey)3 O7-x powder sample and uniaxially orient...
Overdoped cuprates are attracting a renewed interest in searching for clues about the pairing mechan...
Includes bibliographical references (pages [45]-50)It is shown that Fe substituents in the Cul site ...
Bibliography: pages [33]-34.Mossbauer effect measurements at ⁵⁷Fe nuclei have been made at room temp...
Using a high resolution susceptometer based on a self-resonant tunnel diode circuit, the temperature...
Bibliography: pages [39]-41.⁵⁷Fe Mossbauer effect measurements have been performed at room temperatu...
Thermogravimetric curves of the superconducting samples (0.0≤δ<0.5) of YBa<SUB>2</SUB>Cu<SUB>3</S...
Thermogravimetric curves of the superconducting samples (0.0 ≤ δ left angle bracket0.5) of YBa2Cu3O7...
We report NMR measurements of the nuclear relaxation rate at all copper and oxygen sites in magnetic...
X-ray absorption spectra at the oxygen K edge using the total yield technique are reported for YBa2C...
One of the four quadrupole doublets (A, B, C, and D) observed in Mössbauer spectra of orthorhombic (...
Ossandon, J.G. Department of Engineering Sciences, Universidad de Talca, Curicó, Chile.Systematic st...
This study presents $\sp{17}$O NMR spectra of randomly and magnetically oriented samples of various ...
The authors investigate the tetragonal(T)-orthorhombic(O) transient zone of YBa2Cu3O6+x, in a compar...