Oxygen dependence of the antiferromagnetic order in La8-xSrxCu8Oy

I. Felner; D. Hechel; I. Nowik

doi:10.1103/PhysRevB.47.5367

Oxygen dependence of the antiferromagnetic order in La8-xSrxCu8Oy

I. Felner^*, D. Hechel, I. Nowik

^*Corresponding author for this work

Racah Institute of Physics

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

2 Scopus citations

Abstract

Mossbauer spectroscopy of 1% doped57 samples and magnetic-susceptibility measurements were used to study the magnetic order in the nonsuperconducting La8-xSrxCu8Oy (x=1.28, 2, and 6 and y=16-20) systems. These compounds crystallize in a tetragonal crystal structure, space group P4/mbm, where the Cu ions reside in three inequivalent crystallographic sites. The Mossbauer studies show that all the samples investigated are antiferromagnetically ordered and TN depends on x and very strongly on the oxygen content y. In La6Sr2Cu8O19+δ TN decreases from 235 K for the oxygen-deficient sample to 140 K for the oxygen-annealed sample. Most striking is the behavior of La2Sr6Cu8Oy where TN drops from 290 K for y=16 to 9 K for y=17.6. This oxygen dependence of TN is similar to that observed for the YBa2Cu3Oz system.

Original language	English
Pages (from-to)	5367-5372
Number of pages	6
Journal	Physical Review B
Volume	47
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevB.47.5367
State	Published - 1993

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title = "Oxygen dependence of the antiferromagnetic order in La8-xSrxCu8Oy",

abstract = "Mossbauer spectroscopy of 1% doped57 samples and magnetic-susceptibility measurements were used to study the magnetic order in the nonsuperconducting La8-xSrxCu8Oy (x=1.28, 2, and 6 and y=16-20) systems. These compounds crystallize in a tetragonal crystal structure, space group P4/mbm, where the Cu ions reside in three inequivalent crystallographic sites. The Mossbauer studies show that all the samples investigated are antiferromagnetically ordered and TN depends on x and very strongly on the oxygen content y. In La6Sr2Cu8O19+δ TN decreases from 235 K for the oxygen-deficient sample to 140 K for the oxygen-annealed sample. Most striking is the behavior of La2Sr6Cu8Oy where TN drops from 290 K for y=16 to 9 K for y=17.6. This oxygen dependence of TN is similar to that observed for the YBa2Cu3Oz system.",

author = "I. Felner and D. Hechel and I. Nowik",

year = "1993",

doi = "10.1103/PhysRevB.47.5367",

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T1 - Oxygen dependence of the antiferromagnetic order in La8-xSrxCu8Oy

AU - Felner, I.

AU - Hechel, D.

AU - Nowik, I.

PY - 1993

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N2 - Mossbauer spectroscopy of 1% doped57 samples and magnetic-susceptibility measurements were used to study the magnetic order in the nonsuperconducting La8-xSrxCu8Oy (x=1.28, 2, and 6 and y=16-20) systems. These compounds crystallize in a tetragonal crystal structure, space group P4/mbm, where the Cu ions reside in three inequivalent crystallographic sites. The Mossbauer studies show that all the samples investigated are antiferromagnetically ordered and TN depends on x and very strongly on the oxygen content y. In La6Sr2Cu8O19+δ TN decreases from 235 K for the oxygen-deficient sample to 140 K for the oxygen-annealed sample. Most striking is the behavior of La2Sr6Cu8Oy where TN drops from 290 K for y=16 to 9 K for y=17.6. This oxygen dependence of TN is similar to that observed for the YBa2Cu3Oz system.

AB - Mossbauer spectroscopy of 1% doped57 samples and magnetic-susceptibility measurements were used to study the magnetic order in the nonsuperconducting La8-xSrxCu8Oy (x=1.28, 2, and 6 and y=16-20) systems. These compounds crystallize in a tetragonal crystal structure, space group P4/mbm, where the Cu ions reside in three inequivalent crystallographic sites. The Mossbauer studies show that all the samples investigated are antiferromagnetically ordered and TN depends on x and very strongly on the oxygen content y. In La6Sr2Cu8O19+δ TN decreases from 235 K for the oxygen-deficient sample to 140 K for the oxygen-annealed sample. Most striking is the behavior of La2Sr6Cu8Oy where TN drops from 290 K for y=16 to 9 K for y=17.6. This oxygen dependence of TN is similar to that observed for the YBa2Cu3Oz system.

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Oxygen dependence of the antiferromagnetic order in La8-xSrxCu8Oy

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