A simple experimental setup for magneto-dielectric measurements

Manimuthu, P.; Shanker, N. Praveen; Kumar, Krishan; Venkateswaran, C.

doi:10.1016/j.physb.2014.03.051

Cited by 6 publications

(1 citation statement)

References 6 publications

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“…The magneto-dielectric measurements were done with the help of an indigenously designed connector setup. 33 The salient feature of this setup is that, it is incorporated with the already existing instruments like VSM and impedance analyzer used in this study.…”

Section: Experimental Techniquesmentioning

confidence: 99%

Observation of direct magneto-dielectric behaviour in Lu₃Fe₅O_12−δ above room-temperature

Manimuthu

Vidya

Fjellvåg

et al. 2015

Phys. Chem. Chem. Phys.

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The coupling of dielectric and magnetic order is highly nontrivial and seldom observed in rare-earth iron garnets. Careful investigations on polycrystalline Lu3Fe5O12-δ, prepared by the solid state route, establish a direct correlation between the magnetic and dielectric order parameters. A dielectric anomaly at the magnetic ordering temperature supports this correlation. The dielectric permittivity at various magnetic fields is measured using an indigenously developed connector setup. Lu3Fe5O12-δ exhibits a magneto-dielectric coupling of ∼6% at room temperature, which is significant in the case of a single-phase magneto-dielectric material at low fields. Rietveld refinement of the X-ray diffraction pattern, bond valence sum method, Mössbauer spectroscopy, and X-ray photoelectron spectroscopy indicate two different oxidation states of Fe. Complete structural optimizations performed using the density functional theory establish a ferrimagnetic ground state and provide structural parameters in agreement with experimental values. Electronic structure analysis shows that Lu3Fe5O12 exhibits insulating behavior both in ferromagnetic and ferrimagnetic configurations. The capability of Lu3Fe5O12-δ to exhibit room temperature magneto-dielectric response is a key factor in designing and fabricating various electronic devices and sensors.

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Section: Experimental Techniquesmentioning

confidence: 99%

Observation of direct magneto-dielectric behaviour in Lu₃Fe₅O_12−δ above room-temperature

Manimuthu

Vidya

Fjellvåg

et al. 2015

Phys. Chem. Chem. Phys.

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Magnetodielectric coupling in multiferroic holmium iron garnets

Selvi

Chakraborty

Venkateswaran

2017

Journal of Magnetism and Magnetic Materials

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On the dodecahedral site substituted Lu3Fe5O12 ceramics for room temperature magneto-dielectric applications

Manimuthu

Venkateswaran

2015

Materials Letters

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A simple experimental setup for magneto-dielectric measurements

Cited by 6 publications

References 6 publications

Observation of direct magneto-dielectric behaviour in Lu₃Fe₅O_12−δ above room-temperature

Observation of direct magneto-dielectric behaviour in Lu₃Fe₅O_12−δ above room-temperature

Magnetodielectric coupling in multiferroic holmium iron garnets

On the dodecahedral site substituted Lu3Fe5O12 ceramics for room temperature magneto-dielectric applications

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A simple experimental setup for magneto-dielectric measurements

Cited by 6 publications

References 6 publications

Observation of direct magneto-dielectric behaviour in Lu3Fe5O12−δ above room-temperature

Observation of direct magneto-dielectric behaviour in Lu3Fe5O12−δ above room-temperature

Magnetodielectric coupling in multiferroic holmium iron garnets

On the dodecahedral site substituted Lu3Fe5O12 ceramics for room temperature magneto-dielectric applications

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Observation of direct magneto-dielectric behaviour in Lu₃Fe₅O_12−δ above room-temperature

Observation of direct magneto-dielectric behaviour in Lu₃Fe₅O_12−δ above room-temperature