Published May 2004 | Version v1
Journal article Metadata-only

La3+ and Ce4+ doping of hard-magnetic ferrites

Creators

  • 1. Inst. Fizicheskoj Khimii Rossijskoj Akademii Nauk, Moscow (Russian Federation)

Description

Regularities in the formed structure and properties of M1-xRx·nFe2O3 (n=4-6), M=Ba, Sr, Pb; R=La, Ce substituted ferrites during the substitution of M2+ by La3+ or Ce4+ ions in the x=0-0.1 range were studied by physicochemical methods. Dependencies of changing density and porosity in sintered ferrites, magnetic and strength characteristics of gained anisotropic ferrites with x=0.6 and 0.1 are given. The best magnetic strength properties were obtained for the Ce4+ doped barium ferrite BaO·5.5Fe2O3 at x=0.1. X-ray diffraction of barium ferrites La3+ doped (x>0.05) demonstrates presence of ferrimagnetic phase (CaLa)0.5Fe12O19 besides the basic BaFe12O19 phase

Abstract (Russian)

Методами физико-химического анализа изучались закономерности образованной структуры и свойства замещенных ферритов M1-xRx·nFe2O3 (n=4-6), M=Ba, Sr, Pb; R=La, Ce при замещении иона M2+ ионами La3+ или Ce4+ в диапазоне x=0-0.1. Приведены зависимости изменения плотности и пористости спеченных ферритов, магнитные и прочностные характеристики полученных анизотропных ферритов с х=0.6 и 0.1. Лучшие магнитные прочностные свойства получены для бариевого феррита BaO·5.5Fe2O3, легированного ионами Ce4+ при x=0.1. РФА бариевых ферритов, легированных при спекании ионами La3+ (x>0.05) выявил присутствие ферримагнитной фазы (CaLa)0.5Fe12O19 помимо основной фазы BaFe12O19

Additional details

Additional titles

Original title (Russian)
Легирование магнитотвердых ферритов ионами La

Publishing Information

Journal Title
Neorganicheskie Materialy
Journal Volume
40
Journal Issue
5
Journal Page Range
p. 611-616
ISSN
0002-337X
CODEN
NEOMB8

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
36094718
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
BARIUM COMPOUNDS; CERIUM OXIDES; CHEMICAL COMPOSITION; DENSITY; DOPED MATERIALS; FERRITES; LANTHANUM OXIDES; MAGNETIC PROPERTIES; POROSITY; SINTERING; STRONTIUM COMPOUNDS; X-RAY DIFFRACTION
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CERIUM COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; DIFFRACTION; FABRICATION; FERRIMAGNETIC MATERIALS; IRON COMPOUNDS; LANTHANUM COMPOUNDS; MAGNETIC MATERIALS; MATERIALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SCATTERING; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
15 refs., 5 figs., 2 tabs.