Chemical and Physical Pressure Effects on the Magnetic and Transport Properties of the A-Site Ordered Perovskite Sr3YCo4O10.5

2009 ◽  
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pp. 094711 ◽  
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Shin Yoshida ◽  
Wataru Kobayashi ◽  
Tomohito Nakano ◽  
Ichiro Terasaki ◽  
Kazuyuki Matsubayashi ◽  
...  
1997 ◽  
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Hisashi Sasaki ◽  
Shin-ichi Shamoto ◽  
Masatoshi Sato

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J.H. Miao ◽  
...  

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V. Ganesan ◽  
...  

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Roman Privezentsev ◽  
Nikolay Andreev ◽  
...  

We have studied single crystals with same La/Sr ratio but different initial Mn concentration, namely (La0.85Sr0.15)0.93MnO3and (La0.85Sr0.15)0.97MnO3. We have observed, that the temperature of insulator-metal transition TIMincreases for both samples and the temperature of charge ordering TCOincreases for (La0.85Sr0.15)0.93MnO3and decreases for (La0.85Sr0.15)0.97MnO3with the external hydrostatic pressure in the range of 0.1 MPa - 1.3 GPa. After analysis of obtained dependence, we have concluded that (La0.85Sr0.15)0.97MnO3sample has higher concentration of Mn vacancy. Thereby we suppose that growth of Mn vacancy concentration decreases transfer interaction of the conducting electrons and enhances charge ordering of Mn3+and Mn4+ions.


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Fan Yang ◽  
Kedong Bi ◽  
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Yunfei Chen

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