Atomic position of Fe in <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">YBa</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></math>(<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">Cu</mi></mrow><mrow><mn>1</mn><mi mathvariant="normal">−</mi><mi mathvariant="italic">x</mi></mrow></msub></mrow></math><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">Fe</mi></mrow><mrow><mi mathvariant="italic">x</mi></mrow></msub></mrow></math><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mo>)</mo></mrow><mrow><mn>3</mn></mrow></msub></mrow></math><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>7</mn><mi mathvariant="normal">−</mi><mi mathvariant="italic">y</mi></mrow></msub></mrow></math> using ion channeling

L. T. Romano; M. B. H. Breese; D. N. Jamieson; C. Chen; G. W. Grime; F. Watt

doi:10.1103/PhysRevB.44.6927

Atomic position of Fe in ${YBa}_{2}$ ( ${Cu}_{1 - x}$ ${Fe}_{x}$ $)_{3}$ $O_{7 - y}$ using ion channeling

L. T. Romano, M. B. H. Breese, D. N. Jamieson, C. Chen, G. W. Grime, and F. Watt

Phys. Rev. B 44, 6927 – Published 1 October 1991

Abstract

Ion channeling in ${YBa}_{2}$ ( ${Cu}_{1 - x}$ ${Fe}_{x}$ $)_{3}$ $C_{7 - y}$ single crystals (x≤0.05) along the [001] and [011] directions shows that a fraction of the Fe lies out of the (001) plane and therefore does not substitute exactly in the Cu site. Both the backscattered MeV-ion beam and characteristic x rays are measured to obtain this result, and a simple theoretical basis of this process is described.