Nano Titanium Monoxide Crystals and Unusual Superconductivity at 11 K

Jijian Xu; Dong Wang; Heliang Yao; Kejun Bu; Jie Pan; Jianqiao He; Fangfang Xu; Zhanglian Hong; Xiaobo Chen; Fuqiang Huang

doi:10.1002/adma.201706240

Nano Titanium Monoxide Crystals and Unusual Superconductivity at 11 K

Jijian Xu, Dong Wang, Heliang Yao, Kejun Bu, Jie Pan, Jianqiao He, Fangfang Xu, Zhanglian Hong, Xiaobo Chen, Fuqiang Huang^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

56 Citations (Scopus)

Abstract

Nano TiO2 is investigated intensely due to extraordinary photoelectric performances in photocatalysis, new-type solar cells, etc., but only very few synthesis and physical properties have been reported on nanostructured TiO or other low valent titanium-containing oxides. Here, a core–shell nanoparticle made of TiO core covered with a ≈5 nm shell of amorphous TiO1+ x is newly constructed via a controllable reduction method to synthesize nano TiO core and subsequent soft oxidation to form the shell (TiO1+ x). The physical properties measurements of electrical transport and magnetism indicate these TiO@TiO1+ x nanocrystals are a type-ІІ superconductor of a recorded Tc onset = 11 K in the binary Ti–O system. This unusual superconductivity could be attributed to the interfacial effect due to the nearly linear gradient of O/Ti ratio across the outer amorphous layer. This novel synthetic method and enhanced superconductivity could open up possibilities in interface superconductivity of nanostructured composites with well-controlled interfaces. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Original language	English
Article number	1706240
Journal	Advanced Materials
Volume	30
Issue number	10
DOIs	https://doi.org/10.1002/adma.201706240
Publication status	Published - 8 Mar 2018
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

controllable reduction
core–shell structure
interface superconductivity
nano titanium monoxide

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access Output

10.1002/adma.201706240

Other Access Options

Check CityUHK Library

Permanent Link

Right click to copy link

Cite this

@article{58607ab63209412095f2060528e250ac,

title = "Nano Titanium Monoxide Crystals and Unusual Superconductivity at 11 K",

abstract = "Nano TiO2 is investigated intensely due to extraordinary photoelectric performances in photocatalysis, new-type solar cells, etc., but only very few synthesis and physical properties have been reported on nanostructured TiO or other low valent titanium-containing oxides. Here, a core–shell nanoparticle made of TiO core covered with a ≈5 nm shell of amorphous TiO1+ x is newly constructed via a controllable reduction method to synthesize nano TiO core and subsequent soft oxidation to form the shell (TiO1+ x). The physical properties measurements of electrical transport and magnetism indicate these TiO@TiO1+ x nanocrystals are a type-ІІ superconductor of a recorded Tc onset = 11 K in the binary Ti–O system. This unusual superconductivity could be attributed to the interfacial effect due to the nearly linear gradient of O/Ti ratio across the outer amorphous layer. This novel synthetic method and enhanced superconductivity could open up possibilities in interface superconductivity of nanostructured composites with well-controlled interfaces. {\textcopyright} 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

keywords = "controllable reduction, core–shell structure, interface superconductivity, nano titanium monoxide",

author = "Jijian Xu and Dong Wang and Heliang Yao and Kejun Bu and Jie Pan and Jianqiao He and Fangfang Xu and Zhanglian Hong and Xiaobo Chen and Fuqiang Huang",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected]. ",

year = "2018",

month = mar,

day = "8",

doi = "10.1002/adma.201706240",

language = "English",

volume = "30",

journal = "Advanced Materials",

issn = "0935-9648",

publisher = "Wiley-Blackwell",

number = "10",

}

TY - JOUR

T1 - Nano Titanium Monoxide Crystals and Unusual Superconductivity at 11 K

AU - Xu, Jijian

AU - Wang, Dong

AU - Yao, Heliang

AU - Bu, Kejun

AU - Pan, Jie

AU - He, Jianqiao

AU - Xu, Fangfang

AU - Hong, Zhanglian

AU - Chen, Xiaobo

AU - Huang, Fuqiang

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2018/3/8

Y1 - 2018/3/8

N2 - Nano TiO2 is investigated intensely due to extraordinary photoelectric performances in photocatalysis, new-type solar cells, etc., but only very few synthesis and physical properties have been reported on nanostructured TiO or other low valent titanium-containing oxides. Here, a core–shell nanoparticle made of TiO core covered with a ≈5 nm shell of amorphous TiO1+ x is newly constructed via a controllable reduction method to synthesize nano TiO core and subsequent soft oxidation to form the shell (TiO1+ x). The physical properties measurements of electrical transport and magnetism indicate these TiO@TiO1+ x nanocrystals are a type-ІІ superconductor of a recorded Tc onset = 11 K in the binary Ti–O system. This unusual superconductivity could be attributed to the interfacial effect due to the nearly linear gradient of O/Ti ratio across the outer amorphous layer. This novel synthetic method and enhanced superconductivity could open up possibilities in interface superconductivity of nanostructured composites with well-controlled interfaces. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

AB - Nano TiO2 is investigated intensely due to extraordinary photoelectric performances in photocatalysis, new-type solar cells, etc., but only very few synthesis and physical properties have been reported on nanostructured TiO or other low valent titanium-containing oxides. Here, a core–shell nanoparticle made of TiO core covered with a ≈5 nm shell of amorphous TiO1+ x is newly constructed via a controllable reduction method to synthesize nano TiO core and subsequent soft oxidation to form the shell (TiO1+ x). The physical properties measurements of electrical transport and magnetism indicate these TiO@TiO1+ x nanocrystals are a type-ІІ superconductor of a recorded Tc onset = 11 K in the binary Ti–O system. This unusual superconductivity could be attributed to the interfacial effect due to the nearly linear gradient of O/Ti ratio across the outer amorphous layer. This novel synthetic method and enhanced superconductivity could open up possibilities in interface superconductivity of nanostructured composites with well-controlled interfaces. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

KW - controllable reduction

KW - core–shell structure

KW - interface superconductivity

KW - nano titanium monoxide

UR - http://www.scopus.com/inward/record.url?scp=85040672449&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85040672449&origin=recordpage

U2 - 10.1002/adma.201706240

DO - 10.1002/adma.201706240

M3 - RGC 21 - Publication in refereed journal

C2 - 29334154

SN - 0935-9648

VL - 30

JO - Advanced Materials

JF - Advanced Materials

IS - 10

M1 - 1706240

ER -

Nano Titanium Monoxide Crystals and Unusual Superconductivity at 11 K

Abstract

Bibliographical note

Research Keywords

UN SDGs

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Cite this