Transition from spin ice to spin liquid——evolvement of structure and magnetic properties

Author:

Yuan Hui ,Yin Di ,Tang Zheng ,Liu Yong ,Xiong Rui ,Shi Jing ,

Abstract

The polycrystal samples of Ho2-xTbxTi2O7(x=0,05,1,15,2) were prepared by solid reaction method. The result of X-ray diffraction (XRD) and dc susceptibility measurement from 2 K to 300 K both indicate that as the content of Tb3+,i.e. x,increases,the system crosses over from Ho2Ti2O7spin ice to Tb2Ti2O7 spin liquid,the lattice constant of cubic pyrochlore increases,while the Curie constant and effective magnetic moment decrease. Especially,the Curie-Weiss temperature decreases from positive to negative with the decrease of x,implying the transition from ferromagnetic Ho2Ti2O7 to anti-ferromagnetic Tb2Ti2O7. The detailed analysis shows that as x in Ho2-xTbxTi2O7 increases,the intensity of long-range dipolar interaction Dnn decreases. Being ferromagnetic or anti-ferromagnetic,and the change in intensity of long-range dipolar interaction, may be the two crucial factors influencing on the system to form spin ice state or cooperative paramagnetic state,i.e. the spin liquid state.

Publisher

Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences

Subject

General Physics and Astronomy

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3