Hydrogen Treatment for Superparamagnetic VO2 Nanowires with Large Room‐Temperature Magnetoresistance
- 6 June 2016
- journal article
- research article
- Published by Wiley in Angewandte Chemie
- Vol. 55 (28), 8018-8022
- https://doi.org/10.1002/anie.201603406
Abstract
One-dimensional (1D) transition metal oxide (TMO) nanostructures are actively pursued in spintronic devices owing to their nontrivial d electron magnetism and confined electron transport pathways. However, for TMOs, the realization of 1D structures with long-range magnetic order to achieve a sensitive magnetoelectric response near room temperature has been a longstanding challenge. Herein, we exploit a chemical hydric effect to regulate the spin structure of 1D V–V atomic chains in monoclinic VO2 nanowires. Hydrogen treatment introduced V3+ (3d2) ions into the 1D zigzag V–V chains, triggering the formation of ferromagnetically coupled V3+–V4+ dimers to produce 1D superparamagnetic chains and achieve large room-temperature negative magnetoresistance (−23.9 %, 300 K, 0.5 T). This approach offers new opportunities to regulate the spin structure of 1D nanostructures to control the intrinsic magnetoelectric properties of spintronic materials.Funding Information
- National Basic Research Program of China (2015CB932302)
- National Natural Science Foundation of China (21222101, 21501164, U1432133, 11321503, J1030412)
- National Young Top-notch Talent Support Program
- Chinese Academy of Sciences (XDB01020300)
- Fok Ying-Tong Education Foundation, China (141042)
- Fundamental Research Funds for the Central Universities (WK2060190027, WK2340000065, WK2310000055)
- Anhui Provincial Natural Science Foundation (1608085QA08)
This publication has 28 references indexed in Scilit:
- Superparamagnetic Reduced Graphene Oxide with Large Magnetoresistance: A Surface Modulation StrategyAngewandte Chemie, 2016
- Superparamagnetic Reduced Graphene Oxide with Large Magnetoresistance: A Surface Modulation StrategyAngewandte Chemie, 2016
- Giant Magnetoresistance in the Half-Metallic Double-Perovskite Ferrimagnet Mn2FeReO6Angewandte Chemie, 2015
- Giant Magnetoresistance in the Half‐Metallic Double‐Perovskite Ferrimagnet Mn2FeReO6Angewandte Chemie, 2015
- Measurement of a solid-state triple point at the metal–insulator transition in VO2Nature, 2013
- Ultrahigh Magnetoresistance at Room Temperature in Molecular WiresScience, 2013
- Very large magnetoresistance in graphene nanoribbonsNature Nanotechnology, 2010
- Nobel Lecture: Origin, development, and future of spintronicsReviews of Modern Physics, 2008
- Room-temperature ferromagnetic nanotubes controlled by electron or hole dopingNature, 2004
- Orbital Physics in Transition-Metal OxidesScience, 2000