Crossover to Negative Dielectric Constant in Perovskite PrMnO3

Santhosh Kumar Balu,Nagararaj Praveen Shanker,Marimuthu Manikandan,Natarajan Aparnadevi,Thayanithi Mukilraj,Periyaswamy Manimuthu,Chakravarthy Venkateswaran

Physica status solidi A, Applications and materials science（2020）

Cited 23|Views11

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Abstract

Negative dielectric constant (NDC) materials have the potential for unique optical and microwave applications and their use can greatly reduce the complexity of device architecture. The observation of temperature‐dependent NDC above 503 K in the perovskite PrMnO3 is reported which obeys the classical Drude theory. This is confirmed through impedance spectroscopy, and the principle behind the associated negative dielectric loss is explained using the Axelrod mechanism.

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Key words

capacitive to inductive,impedance spectroscopy,negative dielectric constants,negative index materials,perovskites

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