کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1667860 | 1008858 | 2011 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Ferromagnetic and transport properties of highly Mn-doped ZnSnAs2 epitaxial layers on InP substrates Ferromagnetic and transport properties of highly Mn-doped ZnSnAs2 epitaxial layers on InP substrates](/preview/png/1667860.png)
Ternary ZnSnAs2 thin films heavily doped with nominal 10 and 20% Mn content on InP (001) substrates are grown using low-temperature molecular beam epitaxy and their magnetic and transport properties are investigated for the first time. It is found that the Mn-doped ZnSnAs2 thin films are pseudomorphically grown on nearly lattice-matched InP (001) substrates, and a trace amount of secondary phase MnAs formation is observed by high-resolution X-ray diffraction (HR-XRD) measurements. Magnetization measurements on Mn-doped ZnSnAs2 thin films reveal that the Curie temperature is around 334 K. Nominal magnetic moments per Mn atom measured from the saturation magnetization of hysteresis loops at 5 K have been estimated as 5.28 and 4.17 μB for 10% and 20% Mn-doped ZnSnAs2 thin films, respectively. We have found from Hall effect measurements that the 10% and 20% Mn-doped ZnSnAs2 films exhibit n-type conduction, in contrast to p-type conduction in ZnSnAs2 doped with less than 10% Mn. This is likely related to the presence of a certain amount of Mn interstitials or Mn3+ substitution on Zn site in the samples.
Journal: Thin Solid Films - Volume 519, Issue 23, 30 September 2011, Pages 8207–8211