Room Temperature Ferromagnetism in Gadolinium-doped Gallium Nitride

MRS Advances ◽  
2018 ◽  
Vol 3 (3) ◽  
pp. 159-164 ◽  
Author(s):  
Vishal G. Saravade ◽  
Cameron H. Ferguson ◽  
Amirhossein Ghods ◽  
Chuanle Zhou ◽  
Ian T. Ferguson

ABSTRACTAnomalous Hall effect was observed at room temperature in MOCVD-grown GaGdN from a (TMHD)3Gd source, which can contain oxygen in its organic ligand. GaN, and GaGdN grown using a Cp3Gd precursor which does not contain oxygen only showed the ordinary Hall effect. This indicates that oxygen could have a role in magnetic properties of GaGdN. The relationship between the anomalous Hall conductivity and longitudinal conductivity indicated that metallic conduction, hopping of carriers, and scattering-independent mechanisms are likely responsible for the ferromagnetism. However, this still requires further clarification.

2011 ◽  
Vol 84 (7) ◽  
Author(s):  
B. A. Aronzon ◽  
V. V. Rylkov ◽  
S. N. Nikolaev ◽  
V. V. Tugushev ◽  
S. Caprara ◽  
...  

2008 ◽  
Vol 10 (11) ◽  
pp. 115002 ◽  
Author(s):  
Yoon Shon ◽  
Sejoon Lee ◽  
D Y Kim ◽  
T W Kang ◽  
Chong S Yoon ◽  
...  

2017 ◽  
Vol 254 ◽  
pp. 48-51 ◽  
Author(s):  
K.K. Meng ◽  
J. Miao ◽  
X.G. Xu ◽  
Y. Wu ◽  
J.H. Zhao ◽  
...  

2021 ◽  
Vol 1036 ◽  
pp. 45-52
Author(s):  
Jiao Yang ◽  
Xin Yu Wang ◽  
Peng Kai Li ◽  
Ji Fa Huang ◽  
Peng Hao Deng

X-ray diffractometer, field emission scanning electron microscope (SEM, Hitachi S-4800), laser confocal micro-region Raman spectrometer and vibration sample magnetometer were used to systematically study the effects of polyethyleneimine concentrations and exposure time on the morphology and size of ZnO nanowire arrays. The photoelectric property and the relationship between the morphology of nanowire arrays and ferromagnetism at room temperature were also analyzed. Under 15 min exposure time, when the polyethyleneimine concentration is 2.25 g / L, the obtained ZnO nanowire array film exhibits the smallest size, the optimal density and vertical orientation. According to the study of luminescence and room temperature magnetism, it is shown that the optical and ferromagnetic property are related to the variation tendency of oxygen defects and surface defects of the ZnO nanowires.


2013 ◽  
Vol 102 (20) ◽  
pp. 202408 ◽  
Author(s):  
J. L. Yu ◽  
Y. H. Chen ◽  
Y. Liu ◽  
C. Y. Jiang ◽  
H. Ma ◽  
...  

2020 ◽  
Vol 117 (22) ◽  
pp. 222404
Author(s):  
Yunfeng You ◽  
Hua Bai ◽  
Xianzhe Chen ◽  
Yongjian Zhou ◽  
Xiaofeng Zhou ◽  
...  

2020 ◽  
pp. 412692
Author(s):  
Zhongping Zhao ◽  
Qi Guo ◽  
Fenghua Chen ◽  
Kewei Zhang ◽  
Yong Jiang

Author(s):  
Takuya Matsuda ◽  
Natsuki Kanda ◽  
Tomoya Higo ◽  
N. P. Armitage ◽  
Satoru Nakatsuji ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document