Effect of oxygen isotope substitution on charge ordering and magnetic and transport properties in Pr0.5Ca0.5MnO3 doped by chromium and ruthenium

被引：6
作者：
Babushkina, N. A. [1 ]
Taldenkov, A. N. [1 ]
Inyushkin, A. V. [1 ]
Maignan, A. [2 ]
Khomskii, D. I. [3 ]
Kugel, K. I. [4 ]
机构：
[1] Russian Res Ctr, Kurchatov Inst, Moscow 117911, Russia
[2] ENSICAEN, Lab CRISMAT, F-14050 Caen 4, France
[3] Univ Cologne, Inst Phys, D-50937 Cologne, Germany
[4] Russian Acad Sci, Inst Theoret & Appl Electrodynam, Moscow 125412, Russia
来源：
PHYSICAL REVIEW B | 2008年 / 78卷 / 21期
基金：
俄罗斯基础研究基金会;
关键词：
calcium compounds; chromium; ferromagnetic materials; isotope effects; magnetic susceptibility; magnetic transition temperature; magnetoresistance; metal-insulator transition; praseodymium compounds; ruthenium;
D O I：
10.1103/PhysRevB.78.214432
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of the O-16 -> O-18 isotope substitution on the properties of the Pr0.5Ca0.5MnO3 manganites doped by Cr and Ru is studied. In these compounds, chromium and ruthenium favor (i) the suppression of a charge-ordered state and (ii) the formation of a ferromagnetic metallic clusters. The O-16 -> O-18 isotope substitution leads to an increase in the charge-ordering transition temperature (T-CO) and to the lowering of ferromagnetic transition temperature (T-FM) accompanied by a decrease in the content of ferromagnetic phase. The difference in the properties of the Cr- and Ru-doped compounds is analyzed.
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页数：9
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