ESR investigations on Ca perovskite

M. Chipara, Sy-Hwang Liou, C. N. Borca, R. Shoemaker, S. Adenwalla, P. A. Dowben

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Electron spin resonance studies on fine powders of La 0.65Ca 0.35MnO 3, performed in the X band, are reported. The coexistence of paramagnetic and ferromagnetic phases, in a narrow temperature range close to the Curie temperature, is observed. The electron spin resonance measurements do not support the presence of bipolarons above the Curie temperature. Temperature dependence of the ESR linewidth is governed by the hopping of polarons and the corresponding activation energy is about 150 meV above Tc.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposium - Proceedings
EditorsB.J. Daniels, T.P. Nolan, M.A. Seigler, S.X. Wang, C.B. Murray
Volume614
StatePublished - 2001
EventMagnetic Materials, Structures and Processing for Information Storage - San Francisco, CA, United States
Duration: Apr 24 2000Apr 27 2000

Other

OtherMagnetic Materials, Structures and Processing for Information Storage
CountryUnited States
CitySan Francisco, CA
Period4/24/004/27/00

Fingerprint

Perovskite
Paramagnetic resonance
Curie temperature
Polarons
Linewidth
Powders
Activation energy
Temperature
perovskite

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Chipara, M., Liou, S-H., Borca, C. N., Shoemaker, R., Adenwalla, S., & Dowben, P. A. (2001). ESR investigations on Ca perovskite. In B. J. Daniels, T. P. Nolan, M. A. Seigler, S. X. Wang, & C. B. Murray (Eds.), Materials Research Society Symposium - Proceedings (Vol. 614)

ESR investigations on Ca perovskite. / Chipara, M.; Liou, Sy-Hwang; Borca, C. N.; Shoemaker, R.; Adenwalla, S.; Dowben, P. A.

Materials Research Society Symposium - Proceedings. ed. / B.J. Daniels; T.P. Nolan; M.A. Seigler; S.X. Wang; C.B. Murray. Vol. 614 2001.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Chipara, M, Liou, S-H, Borca, CN, Shoemaker, R, Adenwalla, S & Dowben, PA 2001, ESR investigations on Ca perovskite. in BJ Daniels, TP Nolan, MA Seigler, SX Wang & CB Murray (eds), Materials Research Society Symposium - Proceedings. vol. 614, Magnetic Materials, Structures and Processing for Information Storage, San Francisco, CA, United States, 4/24/00.
Chipara M, Liou S-H, Borca CN, Shoemaker R, Adenwalla S, Dowben PA. ESR investigations on Ca perovskite. In Daniels BJ, Nolan TP, Seigler MA, Wang SX, Murray CB, editors, Materials Research Society Symposium - Proceedings. Vol. 614. 2001
Chipara, M. ; Liou, Sy-Hwang ; Borca, C. N. ; Shoemaker, R. ; Adenwalla, S. ; Dowben, P. A. / ESR investigations on Ca perovskite. Materials Research Society Symposium - Proceedings. editor / B.J. Daniels ; T.P. Nolan ; M.A. Seigler ; S.X. Wang ; C.B. Murray. Vol. 614 2001.
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