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Magnetic properties of Mo-doped TiO2 nanoparticles: a candidate for dilute magnetic semiconductors
Materials Letters ( IF 3 ) Pub Date : 2020-04-01 , DOI: 10.1016/j.matlet.2020.127331
S. Ravi , F. Winfred Shashikanth

Abstract Emerging for future electronics, magnetic semiconductors have opened up the interest due to the preservation of both magnetic and semiconducting properties leading to multifunctional capabilities. Dilute magnetic semiconductors are one such candidate, yet it is challenging to have room temperature ferromagnetism with high Curie temperature. In this letter, we report the synthesis and characterization of pure and Mo-doped TiO2 nanoparticles (0.5% and 1%) in the anatase phase. Pure TiO2 shows diamagnetic nature. In comparison, Mo-doped TiO2 has a high Curie temperature of 400 K and exhibits room-temperature ferromagnetism (FM) due to the overlapping and hybridization of Mo 4d and O 2p orbitals. Thus, Mo-doped TiO2 can be considered as dilute magnetic semiconductors (DMS) in future electronics.

中文翻译:

Mo 掺杂的 TiO2 纳米粒子的磁性:稀磁性半导体的候选者

摘要 在未来的电子产品中,磁性半导体由于保留了磁性和半导体特性而引起了人们的兴趣,从而实现了多功能。稀磁性半导体就是这样的一种候选材料,但具有高居里温度的室温铁磁性具有挑战性。在这封信中,我们报告了锐钛矿相中纯和 Mo 掺杂的 TiO2 纳米粒子(0.5% 和 1%)的合成和表征。纯 TiO2 显示出抗磁性。相比之下,Mo 掺杂的 TiO2 具有 400 K 的高居里温度,并且由于 Mo 4d 和 O 2p 轨道的重叠和杂化而表现出室温铁磁性 (FM)。因此,Mo掺杂的TiO2可以被认为是未来电子产品中的稀磁半导体(DMS)。
更新日期:2020-04-01
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