Minor Hysteresis Loops and Bloch Wall Potential in a Fe Single Crystal

2004 ◽  
Vol 73 (1) ◽  
pp. 239-244 ◽  
Author(s):  
S. Takahashi ◽  
T. Ueda ◽  
L. Zhang
2006 ◽  
Vol 45 ◽  
pp. 2412-2421
Author(s):  
Toshio Ogawa

Giant electromechanical coupling factor of k31 mode over 86% was found for (100) Pb[(Zn1/3Nb2/3)0.91Ti0.09]O3 and (110) Pb[(Mg1/3Nb2/3)0.74Ti0.26]O3 single-crystal plates poled in the [100] and [110] directions, respectively. The P-E hysteresis loops in the single-crystal plates with giant k31 became asymmetric. Furthermore, the frequency response of impedance in these plates with giant k31 consisted of a single vibration in the length direction. A mechanism to realize giant k31 can be explained by the relationship between the crystal plane and poling direction. In addition, the existence of giant piezoelectric d31 constant was proven by the strain measurement as well as by the impedance measurement.


Author(s):  
Ricardo de A. Elias ◽  
Carlos A. C. Wengerkievicz ◽  
Guilherme H. Souza Reis ◽  
Nelson Sadowski ◽  
Nelson J. Batistela ◽  
...  

CrystEngComm ◽  
2019 ◽  
Vol 21 (2) ◽  
pp. 348-355 ◽  
Author(s):  
Xudong Qi ◽  
Enwei Sun ◽  
Weiming Lü ◽  
Shiyang Li ◽  
Bin Yang ◽  
...  

The dynamic ferroelectric hysteresis loops with internal bias field were investigated in poled and aged Mn-doped 0.24Pb(In1/2Nb1/2)O3–0.47Pb(Mg1/3Nb2/3)O3–0.29PbTiO3 single crystal.


2015 ◽  
Vol 9 (4) ◽  
pp. 344-348 ◽  
Author(s):  
Ajay Pal Singh Baghel ◽  
Krzysztof Chwastek ◽  
S.V. Kulkarni

1994 ◽  
Vol 235-240 ◽  
pp. 3193-3194
Author(s):  
S.B. Roy ◽  
Shailendra Kumar ◽  
A.K. Pradhan ◽  
P. Chaddah ◽  
Ram Prasad ◽  
...  

2007 ◽  
Vol 121-123 ◽  
pp. 17-20 ◽  
Author(s):  
Yue Ling Sun ◽  
Ying Dai ◽  
L.Q. Zhou ◽  
Wen Chen

Highly ordered single-crystal iron nanowire arrays with different diameters have been fabricated in anodic aluminum oxide (AAO) templates by DC electrodeposition method. The Scanning Electron Microscope (SEM) and Transmission Electron Microscope (TEM) show that the iron nanowires are highly uniform and exhibit a single crystal structure. The X-ray diffraction (XRD) patterns of iron nanowire arrays indicate that most of the iron nanowire arrays have the obvious preferred orientation along the [200] direction. From the hysteresis loops of the iron nanowires, it reveals that the easy magnetization axes of nanowire arrays are along the long axis. The sample with smaller diameter (d=35nm) has a high square ratio (up to 98%) and a high coercive filed (1265Oe) when the external magnetic field is applied along axis of the nanowires. When the diameter decreases, the square ratio and the coercive field increase due to the single-domain structure and the strong shape anisotropy in the smaller diameter nanowire arrays.


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