Structural and superconducting properties of La2−xSrxCuO4 as a function of Sr content

P. G. Radaelli; D. G. Hinks; A. W. Mitchell; B. A. Hunter; J. L. Wagner; B. Dabrowski; K. G. Vandervoort; H. K. Viswanathan; J. D. Jorgensen

doi:10.1103/PhysRevB.49.4163

Structural and superconducting properties of La2−xSrxCuO4 as a function of Sr content

P. G. Radaelli, D. G. Hinks, A. W. Mitchell, B. A. Hunter, J. L. Wagner, B. Dabrowski, K. G. Vandervoort, H. K. Viswanathan, J. D. Jorgensen

DOI 10.1103/PhysRevB.49.4163 · Physical Review B

T1

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Abstract

We have studied the structural and superconducting properties of La2−xSrxCuO4 by neutron and x-ray powder diffraction, thermogravimetry, ac susceptibility, and dc magnetization. The kinetics of the synthesis reaction were studied in order to determine the optimum conditions for preparing single-phase samples. The room-temperature and low-temperature structural properties, as determined by neutron powder diffraction, are discussed in detail. By comparing the results of the neutron-diffraction and magnetic measurements, we conclude that superconductivity exists in both the orthorhombic and tetragonal phases. The thermodynamic conditions for the stability of the La2−xSrxCuO4 phase are also investigated.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	42	2 GPa	unknown
La1.85Sr0.15CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	35	Pressure not reported	unknown