Properties of Ru-Doped Ca-Pr Manganate Thin Films Fabricated by PLD Technique

被引：0
|
作者：
Quoc Thanh Phung [1 ,2 ,3 ]
Yu, Seong-Cho [1 ,2 ]
Duc Tho Nguyen [3 ]
Nam Nhat Hoang [3 ]
机构：
[1] Chungbuk Natl Univ, Phys Program BK21, Cheongju 361763, South Korea
[2] Chungbuk Natl Univ, Dept Phys, Cheongju 361763, South Korea
[3] Vietnam Natl Univ Hanoi, Univ Engn & Technol, Dept Tech Phys & Nanotechnol, Hanoi, Vietnam
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2011年 / 47卷 / 10期
关键词：
Magnetocaloric effect; manganate; pulsed laser deposition (PLD); thin film; MAGNETORESISTANCE PROPERTIES;
D O I：
10.1109/TMAG.2011.2154356
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The Ca0.85Pr0.15Mn1-yRuyO3 (y = 0, 0.04, 0.08, 0.12, 0.16, and 0.20) manganate thin films were prepared by pulsed laser deposition (PLD) technique. The X-ray diffraction (XRD) analysis revealed that the samples were single-phased with orthorhombic structure. The scanning electron microscopy (SEM) images indicated that the samples were composed of homogeneous grains. The Hall-effect measurements showed that the carrier density and Hall mobility of films increased with increasing Ru-doped content. The magnetic field dependence of magnetization at various temperatures were measured by using the superconducting quantum interference device (SQUID) and showed that the increase of Ru-doping content induced the large Delta S change in broad range of temperature. This demonstrates a possible application of these materials in cooling devices as the relative cooling power (RCP) is proportial to - (Delta S)(max)Delta(TFWHM) (where Delta(TFWHM) is the full width at half-maximum of Delta S).
引用
收藏
页码：3913 / 3916
页数：4
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