Ferromagnetic ground state of the robust charge-ordered manganite Pr0.5Ca0.5MnO3 obtained by minimal Al substitution

被引：93

作者：

Banerjee, A. ^{[1
]}

Mukherjee, K. ^{[1
]}

Kumar, Kranti ^{[1
]}

Chaddah, P. ^{[1
]}

机构：

[1] UGC DAE CSR, Indore 452017, India

来源：

PHYSICAL REVIEW B | 2006年 / 74卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.74.224445

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We show that minimal disturbance to the robust charge-ordered Pr0.5Ca0.5MnO3 by 2.5% Al substitution on the Mn site drives the system toward a ferromagnetic ground state. The history-dependent coexisting phases observed are explained as the outcome of a hindered first-order transition with glasslike arrest of kinetics resulting in irreversibility. Consistent with a simple phase diagram having a ferromagnetic ground state, it is experimentally shown that these coexisting phases are far from equilibrium.

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