DFT Investigations of Ti, V Doped ZnO Based Diluted Magnetic Semiconductors

2015 ◽  
Vol 1107 ◽  
pp. 502-507
Author(s):  
Bakhtiar Ul Haq ◽  
R. Ahmed ◽  
A. Shaari ◽  
R. Hussain ◽  
Mazmira binti Mohamad

The injection impurity element into ZnO has added new dimension to its versatile applications particularly in spintronics and optoelectronics. In this work, we are reporting effect of non magnetic Ti, and magnetic V impurities in ZnO. The substitution of impurity atoms have been done in ground state wurtzite (WZ) and meta stable zinc-blende (ZB) structure. Our investigations have revealed a small difference in WZ and ZB geometries of contaminated ZnO reflecting on the possibility of their experimental fabrication. Spin polarized electronic structures resembled nonmagnetic nature of Ti:ZnO in WZ and magnetic nature in ZB geometry. Similarly introduction of V in to ZnO induced magnetization in ZnO in both WZ and ZB geometry. For these investigations, we have adapted DFT approach using FP-L(APW+lo) method implemented in WIEN2k code.

2020 ◽  
Vol 34 (05) ◽  
pp. 2050020
Author(s):  
Younes Ziat ◽  
Maryama Hammi ◽  
Zakaryaa Zarhri ◽  
Charaf Laghlimi ◽  
Rachid Bouachraoui ◽  
...  

The goal of this paper is to study the effect of the small amount of molybdenum-doped [Formula: see text] on the magnetism behavior of that system. We utilized the density functional theory (DFT): DFT framework within MACHIKANEYAMA2002V09 package based on Coherent Potential Approximation (CPA). Inducing the magnetism in the diluted magnetic semiconductors (DMS) with a low dopant concentration at adequate room-temperature is a challenge, so, we restricted the Mo impurity at 2%. In addition, the small amount of Mo-doped [Formula: see text] is found optimal in many studies related to other fields. The ferromagnetic stability is observed in [Formula: see text] system, since the [Formula: see text] state of Mo element is found around the Fermi level and is 100% spin polarized, the half-metallic characteristic is useful in magnetoelectronic applications. Within the mean-field approximation (MFA) we predict the Curie temperature, as an obtained value, the [Formula: see text] K, consequently, the present system showed potential promise for real applications.


2008 ◽  
Vol 18 (43) ◽  
pp. 5208 ◽  
Author(s):  
Igor Djerdj ◽  
Georg Garnweitner ◽  
Denis Arčon ◽  
Matej Pregelj ◽  
Zvonko Jagličić ◽  
...  

2012 ◽  
Vol 177 (12) ◽  
pp. 962-966 ◽  
Author(s):  
J.L. Gomes ◽  
S.C.P. Rodrigues ◽  
G.M. Sipahi ◽  
L. Scolfaro ◽  
E.F. da Silva

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