Spin canting and ferromagnetism in a<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Au</mml:mi><mml:mi mathvariant="normal">Fe</mml:mi></mml:math>alloy: Mössbauer and magnetic measurements

Abstract

We have made M\"ossbauer polarization and susceptibility measurements above technical saturation on Au-19 at.% Fe. Just below the magnetic ordering temperature the system behaves as a ferromagnet, but random local canting sets in at lower temperatures. A well-defined canting transition temperature cannot be established from the data, but canting begins above the temperature at which the low-field susceptibility shows a sharp falloff.