New advanced magnetic La 1.2 (Sr 1.8-x Ca x )Mn 2 O 7 compounds with colossal magnetoresistance

R. S. Liu, C. H. Shen, Shu-Fen Hu, J. G. Lin, C. Y. Huang

Research output: Contribution to journalConference article

4 Citations (Scopus)

Abstract

We present electrical, magnetic and crystal structure for a series of La 1.2 (Sr 1.8-x Ca x )Mn 2 O 7 (x = 0-0.8) manganites. The sample of x = 0.4 exhibits the highest magnetoresistance (MR) ratio [ρ(H)-ρ(O)/ρ(H)]×100% of -108% at the temperature of 102 K. The Curie temperature (T C ) decreases from 135 K for x = 0-102 K for x = 0.4. The hysteresis phenomenon was observed when the temperatures were lower than the magnetic transition temperature. The static strain within the compound for x = 0.4 has also been found by high-resolution transmission electron microscopic techniques.

Original languageEnglish
Pages (from-to)113-115
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume209
Issue number1-3
DOIs
Publication statusPublished - 2000 Jan 1
EventProceedings of the 1999 International Symposium on Advanced Magnetic Technologies (ISAMT'99) - Taipei, Taiwan
Duration: 1999 May 241999 May 25

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Colossal magnetoresistance
Curie temperature
transition temperature
hysteresis
Manganites
crystal structure
Magnetic structure
high resolution
Magnetoresistance
Superconducting transition temperature
Hysteresis
electrons
Crystal structure
Temperature
temperature
Electrons

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

New advanced magnetic La 1.2 (Sr 1.8-x Ca x )Mn 2 O 7 compounds with colossal magnetoresistance . / Liu, R. S.; Shen, C. H.; Hu, Shu-Fen; Lin, J. G.; Huang, C. Y.

In: Journal of Magnetism and Magnetic Materials, Vol. 209, No. 1-3, 01.01.2000, p. 113-115.

Research output: Contribution to journalConference article

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abstract = "We present electrical, magnetic and crystal structure for a series of La 1.2 (Sr 1.8-x Ca x )Mn 2 O 7 (x = 0-0.8) manganites. The sample of x = 0.4 exhibits the highest magnetoresistance (MR) ratio [ρ(H)-ρ(O)/ρ(H)]×100{\%} of -108{\%} at the temperature of 102 K. The Curie temperature (T C ) decreases from 135 K for x = 0-102 K for x = 0.4. The hysteresis phenomenon was observed when the temperatures were lower than the magnetic transition temperature. The static strain within the compound for x = 0.4 has also been found by high-resolution transmission electron microscopic techniques.",
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T1 - New advanced magnetic La 1.2 (Sr 1.8-x Ca x )Mn 2 O 7 compounds with colossal magnetoresistance

AU - Liu, R. S.

AU - Shen, C. H.

AU - Hu, Shu-Fen

AU - Lin, J. G.

AU - Huang, C. Y.

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N2 - We present electrical, magnetic and crystal structure for a series of La 1.2 (Sr 1.8-x Ca x )Mn 2 O 7 (x = 0-0.8) manganites. The sample of x = 0.4 exhibits the highest magnetoresistance (MR) ratio [ρ(H)-ρ(O)/ρ(H)]×100% of -108% at the temperature of 102 K. The Curie temperature (T C ) decreases from 135 K for x = 0-102 K for x = 0.4. The hysteresis phenomenon was observed when the temperatures were lower than the magnetic transition temperature. The static strain within the compound for x = 0.4 has also been found by high-resolution transmission electron microscopic techniques.

AB - We present electrical, magnetic and crystal structure for a series of La 1.2 (Sr 1.8-x Ca x )Mn 2 O 7 (x = 0-0.8) manganites. The sample of x = 0.4 exhibits the highest magnetoresistance (MR) ratio [ρ(H)-ρ(O)/ρ(H)]×100% of -108% at the temperature of 102 K. The Curie temperature (T C ) decreases from 135 K for x = 0-102 K for x = 0.4. The hysteresis phenomenon was observed when the temperatures were lower than the magnetic transition temperature. The static strain within the compound for x = 0.4 has also been found by high-resolution transmission electron microscopic techniques.

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