Iron migration in the (Y,Ca)Ba2(Cu,Fe)O6+δ system

I. Felner; D. Hechel; A. Rykov; B. Raveau

doi:10.1103/PhysRevB.49.686

Iron migration in the (Y,Ca)Ba2(Cu,Fe)O6+δ system

I. Felner^*, D. Hechel, A. Rykov, B. Raveau

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

Mössbauer spectroscopy of Fe57 in Y1-xCaxBa2Cu3-xFexO6+y for x=0.09 was used to study the site distribution of Fe in oxygen-rich and oxygen-reduced samples. In the superconducting sample (y=1) (Tc=85 K) more than 90% of the Fe resides in the Cu(1) site. For y=0 the Cu(2) site orders magnetically at TN=425 K. Based on the typical behavior of Fe in the magnetic Cu(2) site, we find that about 80% of the Fe occupies this site, thus we prove migration of Fe from Cu(1) to Cu(2) sites during depletion of oxygen at elevated temperatures. The spectrum above TN is smeared because of a distribution in the quadrupole interactions.

Original language	English
Pages (from-to)	686-689
Number of pages	4
Journal	Physical Review B
Volume	49
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevB.49.686
State	Published - 1994
Externally published	Yes

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title = "Iron migration in the (Y,Ca)Ba2(Cu,Fe)O6+δ system",

abstract = "M{\"o}ssbauer spectroscopy of Fe57 in Y1-xCaxBa2Cu3-xFexO6+y for x=0.09 was used to study the site distribution of Fe in oxygen-rich and oxygen-reduced samples. In the superconducting sample (y=1) (Tc=85 K) more than 90% of the Fe resides in the Cu(1) site. For y=0 the Cu(2) site orders magnetically at TN=425 K. Based on the typical behavior of Fe in the magnetic Cu(2) site, we find that about 80% of the Fe occupies this site, thus we prove migration of Fe from Cu(1) to Cu(2) sites during depletion of oxygen at elevated temperatures. The spectrum above TN is smeared because of a distribution in the quadrupole interactions.",

author = "I. Felner and D. Hechel and A. Rykov and B. Raveau",

year = "1994",

doi = "10.1103/PhysRevB.49.686",

language = "אנגלית",

volume = "49",

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journal = "Physical Review B",

issn = "0163-1829",

publisher = "American Physical Society",

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T1 - Iron migration in the (Y,Ca)Ba2(Cu,Fe)O6+δ system

AU - Felner, I.

AU - Hechel, D.

AU - Rykov, A.

AU - Raveau, B.

PY - 1994

Y1 - 1994

N2 - Mössbauer spectroscopy of Fe57 in Y1-xCaxBa2Cu3-xFexO6+y for x=0.09 was used to study the site distribution of Fe in oxygen-rich and oxygen-reduced samples. In the superconducting sample (y=1) (Tc=85 K) more than 90% of the Fe resides in the Cu(1) site. For y=0 the Cu(2) site orders magnetically at TN=425 K. Based on the typical behavior of Fe in the magnetic Cu(2) site, we find that about 80% of the Fe occupies this site, thus we prove migration of Fe from Cu(1) to Cu(2) sites during depletion of oxygen at elevated temperatures. The spectrum above TN is smeared because of a distribution in the quadrupole interactions.

AB - Mössbauer spectroscopy of Fe57 in Y1-xCaxBa2Cu3-xFexO6+y for x=0.09 was used to study the site distribution of Fe in oxygen-rich and oxygen-reduced samples. In the superconducting sample (y=1) (Tc=85 K) more than 90% of the Fe resides in the Cu(1) site. For y=0 the Cu(2) site orders magnetically at TN=425 K. Based on the typical behavior of Fe in the magnetic Cu(2) site, we find that about 80% of the Fe occupies this site, thus we prove migration of Fe from Cu(1) to Cu(2) sites during depletion of oxygen at elevated temperatures. The spectrum above TN is smeared because of a distribution in the quadrupole interactions.

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JO - Physical Review B

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Iron migration in the (Y,Ca)Ba2(Cu,Fe)O6+δ system

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