文章信息/Info

Title:

Ferromagnetic Morphotropic Phase Boundary and Magnetostrictive Effect of Laves Phase Rare-earth Alloys

作者:

楊森; 周超; 任曉兵; 宋曉平

理學(xué)院，物質(zhì)非平衡合成與調(diào)控教育部重點(diǎn)實(shí)驗(yàn)室，前沿科學(xué)技術(shù)研究院，西安交通大學(xué)

Author(s):

YANG Sen;  ZHOU Chao;  REN Xiaobing

Frontier Institute of Science and Technology, School of Science, Xi’an Jiaotong University

關(guān)鍵詞:

鐵磁; 準(zhǔn)同型相界; 磁致伸縮效應(yīng); 相變

DOI:

10.7502/j.issn.1674-3962.2016.06.06

文獻(xiàn)標(biāo)志碼:

A

摘要:

磁致伸縮材料是制造換能器和傳感器的重要磁性功能材料。此前，在鐵電材料中，通過將材料成分控制在準(zhǔn)同型相界，獲得了大壓電效應(yīng)。因此根據(jù)鐵磁與鐵電材料表現(xiàn)出的物理效應(yīng)的相似性，可以期待在鐵磁材料中構(gòu)建準(zhǔn)同型相界，獲得磁場導(dǎo)致的奇異應(yīng)變特性。本文歸納了已發(fā)現(xiàn)的基于準(zhǔn)同型相界而構(gòu)建的Laves相RT2稀土合金體系Tb1-xDyxCo2，Tb1-xGdxCo2和Tb1-xGdxFe2，總結(jié)了磁致伸縮效應(yīng)和其他物理性能與準(zhǔn)同型相界的關(guān)系，可為設(shè)計(jì)新型磁致伸縮材料提供思路和依據(jù)。

Abstract:

Magnetostrictive materials are important magnetic functional materials that are widely used in transducers and sensors. Previously, large piezoelectricity was obtained via controlling the composition of ferroelectric materials around morphotropic phase boundary (MPB). Based on the physical parallelism between ferroelectrics and ferromagnetism, it is expected of anomalous field-induced strain effect for magentic materials at MPB. In this article, three types of recently reported ferromagnetic MPB systems are reviewed, and the relationships between various properties and MPB are summarized, which can provide new insights for developing highly magneto-responsive materials.