Details

Autor(en) / Beteiligte

• Owens, Frank J.
• Gladczuk, L.
• Szymczak, R.
• Dluzewski, P.
• Wisniewski, A.
• Szymczak, H.
• Golnik, A.
• Bernhard, Ch
• Niedermayer, Ch

Titel

High temperature magnetic order in zinc sulfide doped with copper

Ist Teil von

• The Journal of physics and chemistry of solids, 2011-06, Vol.72 (6), p.648-652

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2011

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We report the first observation of magnetic order above room temperature in zinc sulfide doped with Cu 2+ made by a simple sintering process and detected by ferromagnetic resonance (FMR), SQUID magnetometry and the μSR experiments. FMR study shows nonzero absorption above room temperature indicating a high value of Curie temperature. Field-cooled and zero-field-cooled magnetization data indicate a bifurcation at about 300 K. This temperature is considered to be the blocking temperature at ferromagnetic nanosized regions, which appear to exist in the sample of ZnS doped with copper. The muon spin rotation measurements confirm highly nonuniform magnetic order. It was shown that about 25% of the sample volume fraction exhibits strong magnetism. ► The magnetic order above room temperature in zinc sulfide doped with Cu 2+ has been detected by ferromagnetic resonance (FMR), SQUID magnetometry and the muon spin rotation (μSR) experiments. ► The μSR data obtained at room temperature confirm highly nonuniform magnetic order and indicate that observed bulk magnetism is coming from Cu doped ZnS.