B-Site Stoichiometry Control of the Magnetotransport Properties of Epitaxial Sr2FeMoO6 Thin Film

被引：6
作者：
Kumar, Nand [1 ,2 ]
Gupta, Raveena [1 ,3 ]
Kaur, Ripudaman [1 ,2 ]
Oka, Daichi [4 ]
Kakkar, Sonali [1 ]
Kumar, Sanjeev [2 ]
Singh, Surendra [5 ,6 ]
Fukumura, Tomoteru [4 ,7 ,8 ]
Bera, Chandan [1 ]
Chakraverty, Suvankar [1 ]
机构：
[1] Inst Nano Sci & Technol, Quantum Mat & Devices Unit, Mohali 140306, Punjab, India
[2] Deemed Univ, Appl Sci Dept, Punjab Engn Coll, Chandigarh 160012, India
[3] Panjab Univ, Ctr Nanosci & Nanotechnol, Chandigarh 160036, India
[4] Tohoku Univ, Grad Sch Sci, Dept Chem, Sendai, Miyagi 9808578, Japan
[5] Bhabha Atom Res Ctr, Solid State Phys Div, Mumbai 400085, Maharashtra, India
[6] Homi Bhabha Natl Inst, Mumbai 400094, Maharashtra, India
[7] Tohoku Univ, Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan
[8] Tohoku Univ, Core Res Cluster, Sendai, Miyagi 9808577, Japan
来源：
ACS APPLIED ELECTRONIC MATERIALS | 2021年 / 3卷 / 02期
关键词：
half metal; double perovskite; stoichiometry; spin polarization; electrical and magnetic properties; DOUBLE-PEROVSKITE SR2FEMOO6; LOW-FIELD MAGNETORESISTANCE; INTERGRAIN MAGNETORESISTANCE; OXIDE; MAGNETIZATION; DISORDER;
D O I：
10.1021/acsaelm.0c00933
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The high degree of spin-polarization observed in ordered double perovskite oxide Sr2FeMoO6 at room temperature has attracted considerable interest from both fundamental and practical points of view. In this paper, we have shown a significant change in spin-polarization with a small B-site off-stoichiometry. We have demonstrated a direct correlation between the growth process, Fe:Mo (B-site) stoichiometry, and the electrical properties of half metallic Sr2FeMoO6 thin film. We have shown that varying the Fe:Mo (B-site) stoichiometry by a small atomic percent results in an order of magnitude change in resistivity and at least four times change in magnetoresistance. Theoretical calculation suggests a strong correlation between electronic structure, electronic polarization, and B-site non-stoichiometry.
引用
收藏
页码：597 / 604
页数：8
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