Phase-segregated glass formation linked to freezing of structural interface motion

P. A. Sharma, S. El-Khatib, I. Mihut, J. B. Betts, A. Migliori, S. B. Kim, S. Guha, S. W. Cheong

Research output: Contribution to journalArticlepeer-review

44 Scopus citations

Abstract

A potentially new kind of glass transition may exist among phase-separated regions in La0.215 Pr0.41 Ca3/8 MnO3. We have observed a very large damping of ultrasonic waves in the dynamically phase-segregated state of this material. This damping is connected to the motion of structural interfaces at megahertz frequencies, which is a much faster time scale than that of magnetic relaxation effects. At lower temperatures, the dynamics of the phase-separated state freeze at the glass transition. Our observations link the onset of this freezing to a sudden decrease in mobility of interfaces between structurally dissimilar phase-segregated regions.

Original languageEnglish (US)
Article number134205
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume78
Issue number13
DOIs
StatePublished - Oct 23 2008

Fingerprint Dive into the research topics of 'Phase-segregated glass formation linked to freezing of structural interface motion'. Together they form a unique fingerprint.

Cite this