Mossbauer study of hyperfine field distributions and spin canting in lithium-zinc ferrites

Abstract

In a Mössbauer study of the system Li <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0.5-x/2</inf> Zn <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">x</inf> Fe <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2.5-x/2</inf> O <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</inf> at 4.2K and in fields up to 70 kOe the occurrence of hyperfine field HF distributions az the Fe <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3+</sup> ions located on B sites due to the dependence of the supertransferred HF on the number of Fe <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3+</sup> (A) nearest neighbors could be established. The Mössbauer spectra taken in fields parallel to the gamma-ray direction for x > 0.6 gave evidence for spin canting, the average canting angle increasing with x.