A strong magneto-optical activity in rare-earth La{sup 3+} substituted M-type strontium ferrites

Journal Article · Wed Jun 01 00:00:00 EDT 2011 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3587181· OSTI ID:21538414

Feng, Hu; Xiansong, Liu; Deru, Zhu ^[1]; Fernandez-Garcia, Lucia; Suarez, Marta; Luis Menendez, Jose ^[2]

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1. Engineering Technology Research Center of Magnetic Materials, Anhui Province, School of Physics and Materials Science, Anhui University, Hefei 230039 (China)
2. Centro de Investigacion en Nanomateriales y Nanotecnologia (CINN), Consejo Superior de Investigaciones Cientificas (CSIC) - Universidad de Oviedo - UO - Principado de Asturias, Parque Tecnologico de Asturias, 33428 Llanera, Asturias (Spain)

M-type strontium ferrites with substitution of Sr{sup 2+} by rare-earth La{sup 3+} were prepared by conventional ceramic technology. The structure, magnetic properties, and magneto-optical Kerr activity of Sr{sub 1-x}La{sub x}Fe{sub 12}O{sub 19} (x = 0, 0.05, 0.10, 0.15, 0.20) were investigated by x-ray diffraction (XRD), vibrating sample magnetometer (VSM), and magneto-optical ellipsometry, respectively. X-ray diffraction showed that the samples sintered at 1290 deg. C for 3 h were single M-type hexagonal ferrites. The magnetic properties were remarkably changed due to the valence change of Fe ions induced by the substitution of La ions. Most significantly, an important magneto-optical activity was induced in the La{sup 3+} substituted M-type strontium ferrites around 3 eV.

• OSTI ID: 21538414
• Journal Information: Journal of Applied Physics, Vol. 109, Issue 11; Other Information: DOI: 10.1063/1.3587181; (c) 2011 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERAMICS
COERCIVE FORCE
ELLIPSOMETRY
FERRITES
LANTHANUM ADDITIONS
LANTHANUM IONS
MAGNETIC PROPERTIES
MAGNETO-OPTICAL EFFECTS
OPTICAL ACTIVITY
RARE EARTHS
SINTERING
STRONTIUM COMPOUNDS
STRONTIUM IONS
VALENCE
VIBRATING SAMPLE MAGNETOMETERS
X-RAY DIFFRACTION
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
CHARGED PARTICLES
COHERENT SCATTERING
DIFFRACTION
ELEMENTS
FABRICATION
FERRIMAGNETIC MATERIALS
IONS
IRON COMPOUNDS
LANTHANUM ALLOYS
MAGNETIC MATERIALS
MAGNETOMETERS
MATERIALS
MEASURING INSTRUMENTS
MEASURING METHODS
METALS
OPTICAL PROPERTIES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH ADDITIONS
RARE EARTH ALLOYS
SCATTERING
TRANSITION ELEMENT COMPOUNDS