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Title: The Phase Diagram and Exotic Magnetostrictive Behaviors in Spinel Oxide Co(Fe1−xAlx)2O4 System

Abstract

We report the magnetic and magnetostrictive behaviors of the pseudobinary ferrimagnetic spinel oxide system (1- x)CoFe 2O 4xCoAl 2O 4 [Co(Fe 1-xAl x) 2O 4], with one end-member being the ferrimagnetic CoFe 2O 4 and the other end-member being CoAl 2O 4 that is paramagnetic above 9.8 K. The temperature spectra of magnetization and magnetic susceptibility were employed to detect the magnetic transition temperatures and to determine the phase diagram of this system. Composition dependent and temperature dependent magnetostrictive behaviors reveal an exotic phase boundary that separates two ferrimagnetic states: At room temperature and under small magnetic fields (~500 Oe), Fe-rich compositions exhibit negative magnetostriction while the Al-rich compositions exhibit positive magnetostriction though the values are small (<10 ppm). Moreover, the compositions around this phase boundary at room temperature ( x = 0.35, 0.4, 0.45, 0.5) exhibit near-zero magnetostriction and enhanced magnetic susceptibility, which may be promising in the applications for magnetic cores, current sensors, or magnetic shielding materials.

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE; National Natural Science Foundation of China (NNSFC); Fundamental Research Funds for the Central Universities; National Science Foundation (NSF)
OSTI Identifier:
1529690
Alternate Identifier(s):
OSTI ID: 1558296
Grant/Contract Number:  
[AC02-06CH11357]
Resource Type:
Published Article
Journal Name:
Materials
Additional Journal Information:
[Journal Name: Materials Journal Volume: 12 Journal Issue: 10]; Journal ID: ISSN 1996-1944
Publisher:
MDPI AG
Country of Publication:
Switzerland
Language:
English
Subject:
36 MATERIALS SCIENCE; magnetostriction; phase boundary; phase diagram; spinel oxide

Citation Formats

Zhou, Chao, Zhang, Azhen, Chang, Tieyan, Chen, Yusheng, Zhang, Yin, Tian, Fanghua, Zuo, Wenliang, Ren, Yang, Song, Xiaoping, and Yang, Sen. The Phase Diagram and Exotic Magnetostrictive Behaviors in Spinel Oxide Co(Fe1−xAlx)2O4 System. Switzerland: N. p., 2019. Web. doi:10.3390/ma12101685.
Zhou, Chao, Zhang, Azhen, Chang, Tieyan, Chen, Yusheng, Zhang, Yin, Tian, Fanghua, Zuo, Wenliang, Ren, Yang, Song, Xiaoping, & Yang, Sen. The Phase Diagram and Exotic Magnetostrictive Behaviors in Spinel Oxide Co(Fe1−xAlx)2O4 System. Switzerland. doi:10.3390/ma12101685.
Zhou, Chao, Zhang, Azhen, Chang, Tieyan, Chen, Yusheng, Zhang, Yin, Tian, Fanghua, Zuo, Wenliang, Ren, Yang, Song, Xiaoping, and Yang, Sen. Thu . "The Phase Diagram and Exotic Magnetostrictive Behaviors in Spinel Oxide Co(Fe1−xAlx)2O4 System". Switzerland. doi:10.3390/ma12101685.
@article{osti_1529690,
title = {The Phase Diagram and Exotic Magnetostrictive Behaviors in Spinel Oxide Co(Fe1−xAlx)2O4 System},
author = {Zhou, Chao and Zhang, Azhen and Chang, Tieyan and Chen, Yusheng and Zhang, Yin and Tian, Fanghua and Zuo, Wenliang and Ren, Yang and Song, Xiaoping and Yang, Sen},
abstractNote = {We report the magnetic and magnetostrictive behaviors of the pseudobinary ferrimagnetic spinel oxide system (1-x)CoFe2O4–xCoAl2O4 [Co(Fe1-xAlx)2O4], with one end-member being the ferrimagnetic CoFe2O4 and the other end-member being CoAl2O4 that is paramagnetic above 9.8 K. The temperature spectra of magnetization and magnetic susceptibility were employed to detect the magnetic transition temperatures and to determine the phase diagram of this system. Composition dependent and temperature dependent magnetostrictive behaviors reveal an exotic phase boundary that separates two ferrimagnetic states: At room temperature and under small magnetic fields (~500 Oe), Fe-rich compositions exhibit negative magnetostriction while the Al-rich compositions exhibit positive magnetostriction though the values are small (<10 ppm). Moreover, the compositions around this phase boundary at room temperature (x = 0.35, 0.4, 0.45, 0.5) exhibit near-zero magnetostriction and enhanced magnetic susceptibility, which may be promising in the applications for magnetic cores, current sensors, or magnetic shielding materials.},
doi = {10.3390/ma12101685},
journal = {Materials},
number = [10],
volume = [12],
place = {Switzerland},
year = {2019},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.3390/ma12101685

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