Cationic site substitution effect on magnetic properties of NiCr2O4 nanoparticles

2020 ◽  
Author(s):  
P. Mohanty ◽  
A. R. E. Prinsloo ◽  
C. J. Sheppard
Keyword(s):  
Magnetic Properties ◽  
Substitution Effect ◽  
Cationic Site

Substitution effect on magnetic properties of

2005 ◽  
Vol 359-361 ◽  
pp. 187-189 ◽  
Author(s):  
Gaku Motoyama ◽  
Suguru Yamamoto ◽  
Yasukage Oda ◽  
Koh-ichi Ueda ◽  
Takao Kohara
Keyword(s):  
Magnetic Properties ◽  
Substitution Effect

MAGNETIC PROPERTIES OF La-DOPED AND Cu-DOPED ZnO NANOWIRES FABRICATED BY HYDROTHERMAL METHOD

2013 ◽  
Vol 27 (15) ◽  
pp. 1362006 ◽  
Author(s):  
SAN-LIN YOUNG ◽  
HONE-ZERN CHEN ◽  
MING-CHENG KAO ◽  
CHUNG-YUAN KUNG ◽  
CHEN-CHENG LIN ◽  
...  
Keyword(s):  
Growth Rate ◽  
Magnetic Properties ◽  
Room Temperature Ferromagnetism ◽  
Substitution Effect ◽  
Hexagonal Structure ◽  
Zno Nanowires ◽  
Cu Doping ◽  
La Doping ◽  
Doped Zno ◽  
La Doped

La -doped and Cu -doped ZnO nanowires have been prepared to compare the substitution effect on the microstructural and magnetic properties. The XRD patterns of both compositions with single diffraction peak (002) show the same wurtzite hexagonal structure. The growth rate of the ZnO nanowires were enhanced by Cu doping, which were different from the suppression of growth rate by La doping. Room temperature ferromagnetism is observed for all ZnO , Cu -doped ZnO and La -doped ZnO nanowires. The saturation magnetizations are 0.102, 0.232 and 0.04 emu/g for ZnO , Cu -doped ZnO and La -doped ZnO nanowires, respectively. The results showed that the ferromagnetism is restrained by Cu doping, but enhanced by the La doping.

scholarly journals Co-Substitution Effect in Room-Temperature Ferromagnetic Oxide Sr3.1Y0.9Co4O10.5

Materials ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2301
Author(s):  
Akihiro Tsuruta ◽  
Shuji Kawasaki ◽  
Masashi Mikami ◽  
Yoshiaki Kinemuchi ◽  
Yoshitake Masuda ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Saturation Magnetization ◽  
High Spin ◽  
Spin State ◽  
Room Temperature ◽  
High Spin State ◽  
Substitution Effect ◽  
Co Substitution ◽  
Intermediate Spin ◽  
Intermediate Spin State

We investigated the Co substitution effect for the magnetic properties in room-temperature ferromagnetic oxide Sr3.1Y0.9Co4O10.5. The substituted element (Al and Ga) and low-spin state Co3+, which was changed from a high-spin or intermediate-spin state by Al or Ga substitution, reduced the Curie temperature to even 1.5 times lower than the temperature estimated from a simple dilution effect. Al3+ preferentially substituted for intermediate-spin-state Co3+ in the ferrimagnetic CoO6 layer and deteriorated the saturation magnetization of Sr3.1Y0.9Co4O10.5. By contrast, Ga3+ substituted for high-spin-state Co3+ in the CoO6 layer and/or the antiferromagnetic CoO4.25 layer and enhanced the saturation magnetization per Co ion. These results indicate that the magnetic properties of Sr3.1Y0.9Co4O10.5 can be controlled by selectively substituting for Co3+ with different spin states.

scholarly journals Magnetic properties and substitution effect of Pr for Ce3Al11

2010 ◽  
Vol 200 (1) ◽  
pp. 012092
Author(s):  
R Kobayashi ◽  
T Nishioka ◽  
H Kato ◽  
M Matsumura ◽  
K Kodama
Keyword(s):  
Magnetic Properties ◽  
Substitution Effect
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