86
L. A. Frolova et al.
3,600
cm
–1
3,200 2,800 2,400 2,000 1,600 1,200 800
400
x=0,5
x=0,75
x=0,25
x=1
Fig. 5.5 IR reflection spectra of samples with synthesized at different cation ratios
inversion of spinel increases, and the number of vacancies decreases. Cobalt ferrite
with a crystallite size of 350 nm and a coercive force of 480 Oe has been successfully
synthesized by the coprecipitation method followed by CNP treatment at a molar
ratio of Co:Fe = 1: 2.
References
1. Valenzuela R (2012) Novel applications of ferrites. Phys Res Int
2. Sharifi I, Shokrollahi H, Amiri S (2012) Ferrite-based magnetic nanofluids used in hyperthermia applications. J Magn Magn Mater 324(6):903–915
3. Bellido E, Domingo N, Ojea-Jiménez I, Ruiz-Molina D (2012) Structuration and integration
of magnetic nanoparticles on surfaces and devices. Small 8(10):1465–1491
4. Liu C, Zou B, Rondinone AJ, Zhang ZJ (2000) Chemical control of superparamagnetic
properties of magnesium and cobalt spinel ferrite nanoparticles through atomic level magnetic
couplings. J Am Chem Soc 122(26):6263–6267
5. Mirgorod YA, Borshch NA, Fedosyuk VM, Yurkov GY (2012) The structure and magnetic
properties of cobalt ferrite nanoparticles synthesized in a system of direct micelles of
amphiphiles by means of ion flotoextraction. Russian J Phys Chem A, Focus Chem 86(3):418–
423
6. Kim GY, Jeon JH, Kim MH, Suvorov D, Choi SY (2013) Microstructural development of
cobalt ferrite ceramics and its influence on magnetic properties. Met Mater Int 19(6):1209
7. Cross WB, Affleck L, Kuznetsov MV, Parkin IP, Pankhurst QA (1999) Self-propagating hightemperature synthesis of ferrites MFe 2 O 4 (M= Mg, Ba, Co, Ni, Cu, Zn); reactions in an
external magnetic field. J Mater Chem 9(10):2545–2552
8. Liu SR, Ji DH, Xu J, Li ZZ, Tang GD, Bian RR et al (2013) Estimation of cation distribution in
spinel ferrites Co 1+ x Fe 2− x O 4 (0.0< x<2.0) using the magnetic moments measured at 10K.
J Alloys Compd 581:616–624
9. Biswal D, Peeples BN, Peeples C, Pradhan AK (2013) Tuning of magnetic properties in cobalt
ferrite by varying Fe +2 and Co +2 molar ratios. J Magn Magn Mater 345:1–6
L. A. Frolova et al.
3,600
cm
–1
3,200 2,800 2,400 2,000 1,600 1,200 800
400
x=0,5
x=0,75
x=0,25
x=1
Fig. 5.5 IR reflection spectra of samples with synthesized at different cation ratios
inversion of spinel increases, and the number of vacancies decreases. Cobalt ferrite
with a crystallite size of 350 nm and a coercive force of 480 Oe has been successfully
synthesized by the coprecipitation method followed by CNP treatment at a molar
ratio of Co:Fe = 1: 2.
References
1. Valenzuela R (2012) Novel applications of ferrites. Phys Res Int
2. Sharifi I, Shokrollahi H, Amiri S (2012) Ferrite-based magnetic nanofluids used in hyperthermia applications. J Magn Magn Mater 324(6):903–915
3. Bellido E, Domingo N, Ojea-Jiménez I, Ruiz-Molina D (2012) Structuration and integration
of magnetic nanoparticles on surfaces and devices. Small 8(10):1465–1491
4. Liu C, Zou B, Rondinone AJ, Zhang ZJ (2000) Chemical control of superparamagnetic
properties of magnesium and cobalt spinel ferrite nanoparticles through atomic level magnetic
couplings. J Am Chem Soc 122(26):6263–6267
5. Mirgorod YA, Borshch NA, Fedosyuk VM, Yurkov GY (2012) The structure and magnetic
properties of cobalt ferrite nanoparticles synthesized in a system of direct micelles of
amphiphiles by means of ion flotoextraction. Russian J Phys Chem A, Focus Chem 86(3):418–
423
6. Kim GY, Jeon JH, Kim MH, Suvorov D, Choi SY (2013) Microstructural development of
cobalt ferrite ceramics and its influence on magnetic properties. Met Mater Int 19(6):1209
7. Cross WB, Affleck L, Kuznetsov MV, Parkin IP, Pankhurst QA (1999) Self-propagating hightemperature synthesis of ferrites MFe 2 O 4 (M= Mg, Ba, Co, Ni, Cu, Zn); reactions in an
external magnetic field. J Mater Chem 9(10):2545–2552
8. Liu SR, Ji DH, Xu J, Li ZZ, Tang GD, Bian RR et al (2013) Estimation of cation distribution in
spinel ferrites Co 1+ x Fe 2− x O 4 (0.0< x<2.0) using the magnetic moments measured at 10K.
J Alloys Compd 581:616–624
9. Biswal D, Peeples BN, Peeples C, Pradhan AK (2013) Tuning of magnetic properties in cobalt
ferrite by varying Fe +2 and Co +2 molar ratios. J Magn Magn Mater 345:1–6