Correlation between the Nucleation of a Griffiths-like Phase and Colossal Magnetoresistance Across the Compositional Metal-Insulator Boundary in La1-xCaxMnO3

被引：2

作者：

Jiang, Wanjun ^{[1
]}

Zhou, XueZhi ^{[1
]}

Privezentsev, R. ^{[2
]}

Mukovskii, Y. ^{[2
]}

Williams, Gwyn ^{[1
]}

机构：

[1] Univ Manitoba, Dept Phys & Astron, Winnipeg, MB R3T 2N2, Canada

[2] Moscow State Steel & Alloys Inst, Moscow 119049, Russia

来源：

INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009) | 2010年 / 200卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

BEHAVIOR;

D O I：

10.1088/1742-6596/200/1/012072

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Detailed measurements of the magnetic and transport properties of single crystals La1-xCaxMnO3 (0.18 <= x <= 0.27) are summarized; comparisons between which (i) not only confirm that Griffiths Phase-like(GP) features are not a prerequisite for CMR, but also demonstrate that the presence of GP-like characteristics do not guarantee the appearance of CMR; (ii) indicate that whereas continuous magnetic transitions occur for 0.18 <= x <= 0.25, the universality class of these transitions belongs to that of nearest-neighbour 3D Heisenberg model only for x <= 0.20, beyond which complications due to GP-like behaviour occur.

引用

页数：4

共 16 条

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