scholarly journals Strong peak inTcof Sr2RuO4under uniaxial pressure

Science ◽  
2017 ◽  
Vol 355 (6321) ◽  
pp. eaaf9398 ◽  
Author(s):  
Alexander Steppke ◽  
Lishan Zhao ◽  
Mark E. Barber ◽  
Thomas Scaffidi ◽  
Fabian Jerzembeck ◽  
...  
Langmuir ◽  
2019 ◽  
Vol 35 (43) ◽  
pp. 13983-13990 ◽  
Author(s):  
Yui Naoi ◽  
Takahiro Seki ◽  
Ryosuke Ohnuki ◽  
Shinya Yoshioka ◽  
Yukikazu Takeoka

2008 ◽  
Vol 77 (11) ◽  
Author(s):  
V. R. Gangilenka ◽  
A. DeSilva ◽  
H. P. Wagner ◽  
R. E. Tallman ◽  
B. A. Weinstein ◽  
...  

2015 ◽  
Vol 659 ◽  
pp. 185-189
Author(s):  
Aparporn Sakulkalavek ◽  
Rungnapa Thonglamul ◽  
Rachsak Sakdanuphab

In this study, we investigated a CuAl0.9Fe0.1O2 compound prepared at two different sintering temperatures in order to find out the effect of sintering temperature on the compound's figure of merit of thermoelectric properties. The thermoelectric CuAl0.9Fe0.1O2 compound was prepared from high purity grade Cu2O, Al2O3 and Fe2O3 powders. The mixture of these powders were ground and then pressed with uniaxial pressure into pellets. The pellets obtained were sintered in the air at 1423 K and 1473 K. X-ray diffraction (XRD) patterns showed a single phase of CuAl0.9Fe0.1O2 with rhombohedral structure, , along with a trace of CuO second phase. Moreover, the XRD peaks of the sample sintered at 1423 K indicated that more Fe3+ atoms replaced Al3+ atoms in this sample than they did in the sample sintered at 1473 K. The average grain size of the CuAl0.9Fe0.1O2 compound prepared increased with increasing sintering temperature, whereas its mean pore size and porosity decreased with increasing sintering temperature. The dispersed small pores markedly decreased the thermal conductivity of the compound, while the Fe3+ substitution of Al3+ increased its electrical conductivity. The highest figure of merit (ZT) found was 0.021 at 973 K in the CuAl0.9Fe0.1O2 sample sintered at 1423 K. Our findings show that this low-cost material with a reasonable figure of merit is a good candidate for thermoelectric applications at high-temperature.


2014 ◽  
Vol 83 (8) ◽  
pp. 084706 ◽  
Author(s):  
Kosuke Karube ◽  
Shunsaku Kitagawa ◽  
Taisuke Hattori ◽  
Kenji Ishida ◽  
Noriaki Kimura ◽  
...  

1994 ◽  
Vol 69 (6) ◽  
pp. 319-326 ◽  
Author(s):  
M. Boukhny ◽  
G. L. Bullock ◽  
B. S. Shivaram ◽  
David G. Hinks

2018 ◽  
Vol 113 (7) ◽  
pp. 071906 ◽  
Author(s):  
Xin Yu Zheng ◽  
Renfei Feng ◽  
D. S. Ellis ◽  
Young-June Kim
Keyword(s):  

2018 ◽  
Vol 32 (8) ◽  
pp. 2467-2469
Author(s):  
S. Muruganantham ◽  
S. Kumararaman ◽  
N. R. Tamilselvan ◽  
T. Thaila ◽  
K. Subbaraman

2008 ◽  
Vol 368-372 ◽  
pp. 601-603
Author(s):  
Xi Wei Qi ◽  
Ji Zhou ◽  
Zhen Xing Yue ◽  
Ming Ya Li ◽  
Xiu Mei Han

Dense NiCuZn ferrites consisting of fine grains were prepared by spark plasma sintering (SPS) at 750°C for 3 min under a uniaxial pressure of 15 MPa. The powders were densified to >95% of theoretical density by the SPS process, and the average grain size of the prepared NiCuZn ferrite was < 1 /m. The saturation magnetization of prepared specimens (without further annealing treatment) was approximate 50.54 emu/g, which was slightly smaller than that of 52.21 emu/g for specimens prepared by conventional sintering at 980°C for 4 h. Phase identifications indicated that prepared NiCuZn ferrite existed impurity phase (Cu2O), and Cu2O would gradually transform to CuO when annealing temperature increased.


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