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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 55, Number 4
JKCSEZ 55(4)
August 20, 2011

Title	Investigation on the Structural, Electrical and Magnetic Properties of Layered Perovskite Manganite La_0.5Sr_1.5Mn_0.5Cr_0.5-xFe_xO₄ (x=0.15, 0.3) System 층상 페로브스카이트 구조인 La_0.5Sr_1.5Mn_0.5Cr_0.5-xFe_xO₄ (x=0.15, 0.3) 망가나이트의 구조적, 전기적, 자기적 특성의 연구
Author	Devinder Singh* Devinder Singh*
Keywords	층상 페로브스카이트 산화물, 페로브스카이트 망가나이트, 전기전도도, 자기적 특성 , Layered perovskite oxides, Perovskite manganites, Electrical properties, Magnetic properties
Abstract	새로운 층상구조인 페로브스카이트 망가나이트 La0.5Sr1.5Mn0.5Cr0.5-xFexO4 (x=0.15, 0.3) 를 세라믹 방법에 의해 합성하였다. 분말 X-선 측정을 통하여 I4/mmm 의 정방정계 단위세포를 확인하였다. 전기전도도 측정을 통하여 부도체의 특성을 확인하였으며 전기전도도는 3D 홉핑 메커니즘에 의해 나타난다. 자기적 특성은 모두 반강자성의 특성을 보인다. The new layered perovskite manganites La0.5Sr1.5Mn0.5Cr0.5-xFexO4 (x=0.15, 0.3) have been prepared by standard ceramic method. The powder X-ray diffraction studies show that the phases crystallize with tetragonal unit cell in the space group I4/mmm. The electrical transport properties suggest that the phases show insulating behaviour and the electrical conduction in the phases occurs by a 3D variable range hopping mechanism. The magnetic properties suggest that both the phases are antiferromagnetic.
Page	697 - 702
Full Text	PDF

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