scholarly journals Effect of Mn-substitution on the structure Co0.6Zn0.4Fe2O4

2021 ◽  
Vol 1795 (1) ◽  
pp. 012036
Author(s):  
N. Hasan ◽  
Mohammed H. Hadi
Keyword(s):  
Fuel ◽  
2021 ◽  
Vol 290 ◽  
pp. 120056
Author(s):  
Daobing Shu ◽  
Tianhu Chen ◽  
Heng Xie ◽  
Fuwei Sun ◽  
Dong Chen ◽  
...  
Keyword(s):  

Author(s):  
Lokesh Suthar ◽  
Falguni Bhadala ◽  
Priyanka Kumari ◽  
Sunil Kumar Mishra ◽  
M. Roy

Clay Minerals ◽  
1990 ◽  
Vol 25 (4) ◽  
pp. 507-518 ◽  
Author(s):  
M. H. Ebinger ◽  
D. G. Schulze

AbstractMn-substituted iron oxides were synthesized at pH 4, 6, 8, and 10 from Fe-Mn systems with Mn mole fractions (Mn/(Mn + Fe)) of 0, 0·2, 0·4, 0·6, 0·8, and 1·0, and kept at 50°C for 40 days. The Mn mole fraction in goethite was <0·07 at pH 4 but increased to ∼0.47 at pH 6. Goethite and/or hematite formed in Fe and Fe + Mn syntheses at pH 4 and pH 6 at Mn mole fractions ≤0·8, and at Mn mole fractions ≤0·2 at pH 8 and pH 10. Hausmannite and jacobsite formed at pH 8 and pH 10 at Mn mole fractions ≥0·4. In the pure Mn syntheses, manganite (γ-MnOOH) formed at pH 4 and pH 6, whereas hausmannite (Mn3O4) formed at pH 8 and pH 10. As the Mn substitution increased, the unit-cell dimensions of goethite shifted toward those of groutite, and the mean crystallite dimensions of goethite decreased.


2011 ◽  
Vol 25 (1) ◽  
pp. 85-90 ◽  
Author(s):  
Indu Verma ◽  
R. Rawat ◽  
V. Ganesan ◽  
D. M. Phase ◽  
B. Das
Keyword(s):  

2000 ◽  
Vol 308 (1-2) ◽  
pp. 319-322 ◽  
Author(s):  
Z.J Guo ◽  
Z.D Zhang ◽  
X.G Zhao ◽  
X.M Jin ◽  
D.Y Geng

2009 ◽  
Vol 321 (2) ◽  
pp. 81-87 ◽  
Author(s):  
A.K.M. Akther Hossain ◽  
T.S. Biswas ◽  
S.T. Mahmud ◽  
Takeshi Yanagida ◽  
Hidekazu Tanaka ◽  
...  

2008 ◽  
Vol 77 (20) ◽  
Author(s):  
Yasuyuki Hikita ◽  
Lena Fitting Kourkoutis ◽  
Tomofumi Susaki ◽  
David A. Muller ◽  
Hidenori Takagi ◽  
...  

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