Experimental insight into the magnetic and electrical properties of amorphous Ge1-xMnx

Science and Technology of Advanced Materials

Paola Tiberto¹  Gianluca Conta¹  Marco Coïsson¹  Giampiero Amato¹ 

[1] INRIM;

关键词: Dilute magnetic semiconductor;    bound magnetic polaron;    ferromagnetic percolation;    localization;   

DOI  :  10.1080/14686996.2016.1252234

来源: DOAJ

【 摘 要 】

We present a study of the electrical and magnetic properties of the amorphous Ge1-xMnx.DMS, with 2% ≤ x ≤ 17%, by means of SQUID magnetometry and low temperature DC measurements. The thin films were grown by physical vapour deposition at 50°C in ultrahigh vacuum. The DC electrical characterizations show that variable range hopping is the main mechanism of charge transport below room temperature. Magnetic characterization reveals that a unique and smooth magnetic transition is present in our samples, which can be attributed to ferromagnetic percolation of bound magnetic polarons.

【 授权许可】

Unknown