Magnetic and 151Eu Mössbauer studies on orthorhombic and tetragonal EuBa2Cu3O7-y

S. K. Malik; C. V. Tomy; D. T. Adroja; R. Nagarajan; Ram Prasad; N. C. Soni

doi:10.1016/0038-1098(88)90330-4

Magnetic and ¹⁵¹Eu Mössbauer studies on orthorhombic and tetragonal EuBa₂Cu₃O_7-y

S. K. Malik, C. V. Tomy, D. T. Adroja, R. Nagarajan, Ram Prasad, N. C. Soni

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

6 Citations (Scopus)

Abstract

The compound EuBa₂Cu₃O_7-y has been stabilized in the orthorhombic structure by slow cooling and in the tetragonal structure by quenching from high temperatures. These two structures differ in the number of oxygen atoms per unit cell and their ordering. The orthorhombic form of this compound is superconducting with a mid-point T_c =87K. In contrast, superconductivity is suppressed in the tetragonal form prepared by quenching. From ¹⁵¹Eu Mossbauer studies, Eu is found to be in a trivalent state in both of them. Magnetic susceptibility measurements show a slight increase in the susceptibility of the tetragonal form relative to that of the orthorhombic form. This may be due to the changes in the magnetic moment on copper.

Original language	English
Pages (from-to)	1097-1100
Number of pages	4
Journal	Solid State Communications
Volume	66
Issue number	10
DOIs	https://doi.org/10.1016/0038-1098(88)90330-4
Publication status	Published - Jun 1988
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Materials Chemistry

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10.1016/0038-1098(88)90330-4

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title = "Magnetic and 151Eu M{\"o}ssbauer studies on orthorhombic and tetragonal EuBa2Cu3O7-y",

abstract = "The compound EuBa2Cu3O7-y has been stabilized in the orthorhombic structure by slow cooling and in the tetragonal structure by quenching from high temperatures. These two structures differ in the number of oxygen atoms per unit cell and their ordering. The orthorhombic form of this compound is superconducting with a mid-point Tc =87K. In contrast, superconductivity is suppressed in the tetragonal form prepared by quenching. From 151Eu Mossbauer studies, Eu is found to be in a trivalent state in both of them. Magnetic susceptibility measurements show a slight increase in the susceptibility of the tetragonal form relative to that of the orthorhombic form. This may be due to the changes in the magnetic moment on copper.",

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T1 - Magnetic and 151Eu Mössbauer studies on orthorhombic and tetragonal EuBa2Cu3O7-y

AU - Malik, S. K.

AU - Tomy, C. V.

AU - Adroja, D. T.

AU - Nagarajan, R.

AU - Prasad, Ram

AU - Soni, N. C.

PY - 1988/6

Y1 - 1988/6

N2 - The compound EuBa2Cu3O7-y has been stabilized in the orthorhombic structure by slow cooling and in the tetragonal structure by quenching from high temperatures. These two structures differ in the number of oxygen atoms per unit cell and their ordering. The orthorhombic form of this compound is superconducting with a mid-point Tc =87K. In contrast, superconductivity is suppressed in the tetragonal form prepared by quenching. From 151Eu Mossbauer studies, Eu is found to be in a trivalent state in both of them. Magnetic susceptibility measurements show a slight increase in the susceptibility of the tetragonal form relative to that of the orthorhombic form. This may be due to the changes in the magnetic moment on copper.

AB - The compound EuBa2Cu3O7-y has been stabilized in the orthorhombic structure by slow cooling and in the tetragonal structure by quenching from high temperatures. These two structures differ in the number of oxygen atoms per unit cell and their ordering. The orthorhombic form of this compound is superconducting with a mid-point Tc =87K. In contrast, superconductivity is suppressed in the tetragonal form prepared by quenching. From 151Eu Mossbauer studies, Eu is found to be in a trivalent state in both of them. Magnetic susceptibility measurements show a slight increase in the susceptibility of the tetragonal form relative to that of the orthorhombic form. This may be due to the changes in the magnetic moment on copper.

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Magnetic and ¹⁵¹Eu Mössbauer studies on orthorhombic and tetragonal EuBa₂Cu₃O_7-y

Abstract

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