Ferroelectricity and ferromagnetism of La0.5Lu0.5Ni0.5Mn0.5O3 thin films on Nb:SrTiO3 substrates

被引：3
作者：
Li, S. Z. [1 ,2 ]
Zhu, C. [1 ,3 ]
Yan, Z. B. [1 ,3 ]
Luo, S. J. [1 ,3 ]
Wang, K. F. [1 ,3 ]
Liu, J-M [1 ,3 ]
机构：
[1] Nanjing Univ, Solid State Microstruct Lab, Nanjing 210093, Peoples R China
[2] Hubei Normal Univ, Sch Phys, Huangshi 435001, Peoples R China
[3] Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2010年 / 22卷 / 20期
关键词：
X-RAY PHOTOELECTRON; PEROVSKITES; LA2NIMNO6; NICKEL;
D O I：
10.1088/0953-8984/22/20/206005
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Epitaxial orthorhombic La0.5Lu0.5Ni0.5Mn0.5O3 (LLNMO) thin films deposited on Nb:SrTiO3 (NSTO) substrates are prepared by pulsed laser deposition and their ferroelectricity and magnetism are investigated using various techniques. It is revealed that the as-prepared thin films are ferromagnetic (FM) insulators. The FM transition occurring at similar to 125 K is evidenced by the well defined hysteresis at low temperature, with a saturated magnetic moment as high as 1.8 mu(B)/f.u. at similar to 5 K. A reversible ferroelectric polarization of similar to 0.2 mu C cm(-2) below similar to 140 K is also observed. The magnetism can be understood by the FM ordering associated with a partially ordered major Ni2+-Mn4+ plus minor Mn3+-Ni3+ configuration, while the ferroelectricity is argued to originate from the A-site disordering of La3+ and Lu3+.
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页数：7
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