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Structural and electrical properties of La(Sr,Ca)MnO3 ceramics for NTC thermistors
- Kim, Eun-Hui;
- Lee, Sam-Haeng;
- Park, Byeong-Jun;
- Lim, Jeong-Eun;
- Lee, Myung-Gyu;
- ... Kim, Byung-Cheul;
- 외 2명
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0초록
La-0.7(Sr0.3-xCax)MnO3 (0.1 <= x <= 0.25) ceramics were prepared using solid-state sintering. XRD measurements showed that all specimens showed rhombohedral polycrystalline structures. As the amount of Ca increased from 0.1 mol to 0.25 mol, sintered densities decreased from 5.8888 g/cm(3) to 5.5829 g/cm(3). All specimens exhibited excellent NTCR properties of approximately 0.445-0.421 %/degrees C. The TCR property, B-25(/65) constant, and resistivity at room temperature of the LSMO specimen doped with 0.2 mol Ca were 0.439 %/degrees C, 469 K, and 3.94 x 10(4) Omega-cm, respectively.
키워드
La(Sr,Ca)MnO3; Thermistors; Hopping conduction; Structural properties; Electrical properties
- 제목
- Structural and electrical properties of La(Sr,Ca)MnO3 ceramics for NTC thermistors
- 저자
- Kim, Eun-Hui; Lee, Sam-Haeng; Park, Byeong-Jun; Lim, Jeong-Eun; Lee, Myung-Gyu; Park, Joo-Seok; Kim, Byung-Cheul; Lee, Sung-Gap
- 발행일
- 2021-12
- 유형
- Article
- 권
- 22
- 호
- 6
- 페이지
- 692 ~ 696