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Title: Measurements on magnetoelectrics under extreme conditions.
Authors: Sunku Sai Swaroop.
Keywords: DRNTU::Science::Physics::Electricity and magnetism
Issue Date: 2011
Abstract: This work investigates the properties of a potential magnetoelectric multiferroic EuTiO3. The interest in this material is due to it’s unusual low temperature properties. A quantum paraelectric and an antiferromagnet, it exhibits a small anomaly in the dielectric constant and magnetisation simultaneously below the N´eel temperature. It is suspected that the small anomaly is the signature of a transition to a ferroelectric state. In this work, the specific heat data was analysed and it was found that there is no thermodynamic phase transition below the N´eel temperature. The magnetisation data confirmed that the unusual anisotropy found previously was due to a misalignment of the crystal axes. A system to measure the dielectric constant in the PPMS using the three terminal technique was built and was tested using a reference sample of SrTiO3.
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Student Reports (FYP/IA/PA/PI)

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