Type of Magnetic Field Dependency of AC Susceptibility of Rare Earth Titanates


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The nanocomposite artificial crystals with embedded magnetic nanoparticles are obtained from opal matrices composed of the submicron SiO2 spheres. The introduced particles are sized from 5 to 60 nm. These artificial crystals contain particles of several rare earth titanates with pyrochlore structure. Low temperature magnetic properties of these nanocomposite materials have been investigated. The frequency and magnetic field dependences of AC magnetic susceptibility of nanocomposites with Gd2Ti2O7, Dy2Ti2O7, Sm2Ti2O7, Nd2Ti2O7 and Er2Ti2O7 particles have been measured in temperature range from 2 to 10 K at frequencies from 1 Hz to 10 kHz. It has been established that magnetic field dependences of these rare earth nanocomposite titanates obey Cole-Cole-like formula written for magnetic field dependency of AC magnetic susceptibility.

作者简介

A. Rinkevich

Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences

编辑信件的主要联系方式.
Email: rinl@imp.uran.ru
俄罗斯联邦, Ekaterinburg, 620108

A. Korolev

Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences

Email: rinl@imp.uran.ru
俄罗斯联邦, Ekaterinburg, 620108

D. Perov

Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences

Email: rinl@imp.uran.ru
俄罗斯联邦, Ekaterinburg, 620108

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