논문 상세보기

이중 층 La1.4(Sr0.2Ca1.4)Mn2O7 세라믹스의 저온에서의 Small Polaron Hopping 전도 KCI 등재 SCOPUS

Low-Temperature Small Polaron Hopping Conduction in Bilayer La1.4(Sr0.2Ca1.4)Mn2O7 Ceramics

  • 언어KOR
  • URLhttps://db.koreascholar.com/Article/Detail/296806
구독 기관 인증 시 무료 이용이 가능합니다. 4,000원
한국재료학회지 (Korean Journal of Materials Research)
한국재료학회 (Materials Research Society Of Korea)
초록

The dc resistivity and thermoelectric power of bilayered perovskite La1.4(Sr0.2Ca1.4)Mn2O7 weremeasured as a function of the temperature. In the ferromagnetic phase, ρ(T) was accurately predicted by a0+a2T2+a4.5T4.5 with and without an applied field. At high temperatures, a significant difference between theactivation energy deduced from the electrical resistivity and thermoelectric power, a characteristic of smallpolarons, was observed. All of the experimental data can be feasibly explained on the basis of the small polaron.

저자
  • 정우환 | Jung, Woo-Hwan