scholarly journals Transport properties of polycrystalline SnTe prepared by saturation annealing

RSC Advances ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 5996-6005
Author(s):  
Dorra Ibrahim ◽  
Shantanu Misra ◽  
Sylvie Migot ◽  
Jaafar Ghanbaja ◽  
Anne Dauscher ◽  
...  
Keyword(s):  
Grain Boundaries ◽  
Transport Properties ◽  
Vacancy Concentration

Saturation annealing enables controlling the inherent Sn vacancy concentration in polycrystalline SnTe, without the presence of elemental Sn at the grain boundaries.

The Role of Grain-Boundaries in the Transport Properties of CVD-Grown Bi-Sr-Ca-Cu-O Films

1991 ◽  
pp. 1093-1096 ◽  
Author(s):  
Chikako Tanaka ◽  
Tomoji Nakamura ◽  
Hideki Yamawaki ◽  
Takafumi Kimura ◽  
Osamu Ueda ◽  
...  
Keyword(s):  
Grain Boundaries ◽  
Transport Properties

Pressure Effects on Transport Properties of (La0.85Sr0.15)yMnO3 Single Crystals

2015 ◽  
Vol 233-234 ◽  
pp. 273-276
Author(s):  
Aleksandr Shakin ◽  
Denis Abashev ◽  
Dmitry Shulyatev ◽  
Roman Privezentsev ◽  
Nikolay Andreev ◽  
...  
Keyword(s):  
Hydrostatic Pressure ◽  
Transport Properties ◽  
Single Crystals ◽  
Vacancy Concentration ◽  
Charge Ordering ◽  
Pressure Effects ◽  
External Hydrostatic Pressure ◽  
Insulator Metal Transition ◽  
Mn Concentration

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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