The effect of surface and interface on Neel transition temperature of low-dimensional antiferromagnetic materials
Incorporating the bond order-length-strength (BOLS) notion with the Ising premise, we have modeled the size dependence of the Neel transition temperature (TN) of antiferromagnetic nanomaterials. Reproduction of the size trends reveals that surface atomic undercoordination induces bond contraction, a...
Saved in:
Main Authors: | , , , , , |
---|---|
Other Authors: | |
Format: | Article |
Language: | English |
Published: |
2015
|
Subjects: | |
Online Access: | https://hdl.handle.net/10356/80975 http://hdl.handle.net/10220/39023 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Nanyang Technological University |
Language: | English |
id |
sg-ntu-dr.10356-80975 |
---|---|
record_format |
dspace |
spelling |
sg-ntu-dr.10356-809752020-03-07T13:57:23Z The effect of surface and interface on Neel transition temperature of low-dimensional antiferromagnetic materials Zhang, Wen Zhou, Zhaofeng Zhong, Yuan Zhang, Ting Huang, Yongli Sun, Changqing School of Electrical and Electronic Engineering Chemical bonds Interface structure Exchange interactions Nanomaterials Antiferromagnetic materials Incorporating the bond order-length-strength (BOLS) notion with the Ising premise, we have modeled the size dependence of the Neel transition temperature (TN) of antiferromagnetic nanomaterials. Reproduction of the size trends reveals that surface atomic undercoordination induces bond contraction, and interfacial hetero-coordination induces bond nature alteration. Both surface and interface of nanomaterials modulate the TN by adjusting the atomic cohesive energy. The TN is related to the atomic cohesive/exchange energy that is lowered by the coordination number (CN) imperfection of the undercoordinated atoms near the surface and altered by the changed bond nature of epitaxialinterface. A numerical match between predictions and measurements reveals that the TN of antiferromagnetic nanomaterials declines with reduced size and increases with both the strengthening of heterogeneous bond and the increase of the bond number. Published version 2015-12-10T04:02:22Z 2019-12-06T14:18:42Z 2015-12-10T04:02:22Z 2019-12-06T14:18:42Z 2015 Journal Article Zhang, W., Zhou, Z., Zhong, Y., Zhang, T., Huang, Y., & Sun, C. (2015). The effect of surface and interface on Neel transition temperature of low-dimensional antiferromagnetic materials. AIP Advances, 5(11), 117228. 2158-3226 https://hdl.handle.net/10356/80975 http://hdl.handle.net/10220/39023 10.1063/1.4936250 en AIP Advances © 2015 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License. [http://dx.doi.org/10.1063/1.4936250] 8 p. application/pdf |
institution |
Nanyang Technological University |
building |
NTU Library |
country |
Singapore |
collection |
DR-NTU |
language |
English |
topic |
Chemical bonds Interface structure Exchange interactions Nanomaterials Antiferromagnetic materials |
spellingShingle |
Chemical bonds Interface structure Exchange interactions Nanomaterials Antiferromagnetic materials Zhang, Wen Zhou, Zhaofeng Zhong, Yuan Zhang, Ting Huang, Yongli Sun, Changqing The effect of surface and interface on Neel transition temperature of low-dimensional antiferromagnetic materials |
description |
Incorporating the bond order-length-strength (BOLS) notion with the Ising premise, we have modeled the size dependence of the Neel transition temperature (TN) of antiferromagnetic nanomaterials. Reproduction of the size trends reveals that surface atomic undercoordination induces bond contraction, and interfacial hetero-coordination induces bond nature alteration. Both surface and interface of nanomaterials modulate the TN by adjusting the atomic cohesive energy. The TN is related to the atomic cohesive/exchange energy that is lowered by the coordination number (CN) imperfection of the undercoordinated atoms near the surface and altered by the changed bond nature of epitaxialinterface. A numerical match between predictions and measurements reveals that the TN of antiferromagnetic nanomaterials declines with reduced size and increases with both the strengthening of heterogeneous bond and the increase of the bond number. |
author2 |
School of Electrical and Electronic Engineering |
author_facet |
School of Electrical and Electronic Engineering Zhang, Wen Zhou, Zhaofeng Zhong, Yuan Zhang, Ting Huang, Yongli Sun, Changqing |
format |
Article |
author |
Zhang, Wen Zhou, Zhaofeng Zhong, Yuan Zhang, Ting Huang, Yongli Sun, Changqing |
author_sort |
Zhang, Wen |
title |
The effect of surface and interface on Neel transition temperature of low-dimensional antiferromagnetic materials |
title_short |
The effect of surface and interface on Neel transition temperature of low-dimensional antiferromagnetic materials |
title_full |
The effect of surface and interface on Neel transition temperature of low-dimensional antiferromagnetic materials |
title_fullStr |
The effect of surface and interface on Neel transition temperature of low-dimensional antiferromagnetic materials |
title_full_unstemmed |
The effect of surface and interface on Neel transition temperature of low-dimensional antiferromagnetic materials |
title_sort |
effect of surface and interface on neel transition temperature of low-dimensional antiferromagnetic materials |
publishDate |
2015 |
url |
https://hdl.handle.net/10356/80975 http://hdl.handle.net/10220/39023 |
_version_ |
1681042373243568128 |