Thermal Expansion of Alkaline-Doped Lanthanum Ferrite Near the Neel Temperature

被引：13

作者：

Beausoleil, Geoffrey L., II ^{[1
]}

Price, Patrick ^{[1
]}

Thomsen, David ^{[1
]}

Punnoose, Alex ^{[2
]}

Ubic, Rick ^{[1
,3
]}

Misture, Scott ^{[4
]}

Butt, Darryl P. ^{[1
,3
]}

机构：

[1] Boise State Univ, Dept Mat Sci & Engn, Boise, ID 83725 USA

[2] Boise State Univ, Dept Phys, Boise, ID 83725 USA

[3] Ctr Adv Energy Studies, Idaho Falls, ID 83401 USA

[4] Alfred Univ, Kazuo Inamori Sch Engn, Alfred, NY 14802 USA

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2014年 / 97卷 / 01期

关键词：

X-RAY; POLYCRYSTALLINE LAFEO3; ELECTRONIC-PROPERTIES; CRYSTAL-STRUCTURE; ANTIFERROMAGNETISM; EVOLUTION; LATTICE;

D O I：

10.1111/jace.12625

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The thermal expansion and magnetic behaviors of divalent, alkaline-doped lanthanum ferrites (La0.9M0.1FeO3, M=Ca, Sr, Ba) were assessed using a combination of dilatometry, magnetometry, time-of-flight neutron diffraction, and high-temperature X-ray diffraction. Neel temperatures were determined through vibrating sample magnetometry and correlated well with changes in thermal expansion behavior observed during both dilatometry and X-ray diffraction. The Neel temperatures observed for pure, Ca-doped, Sr-doped, and Ba-doped lanthanum ferrites were 471 degrees C, 351 degrees C, 465 degrees C, and 466 degrees C, respectively. The effect of divalent substitutions on the magnetic behavior are attributed to charge compensation mechanisms and structural changes in the material.

引用

页码：228 / 234

页数：7

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