Intrinsic interface exchange coupling of ferromagnetic nanodomains in a charge ordered manganite

D. Niebieskikwiat, M. B. Salamon

Research output: Contribution to journalArticlepeer-review

243 Scopus citations

Abstract

We present a detailed magnetic study of the Pr1 3Ca2 3MnO3 manganite, where we observe the presence of small ferromagnetic (FM) domains (diameter ∼10) immersed within the charge-ordered antiferromagnetic (AFM) host. Due to the interaction of the FM nanodroplets with a disordered AFM shell, the low-temperature magnetization loops present exchange bias (EB) under cooling in an applied magnetic field. Our analysis of the cooling field dependence of the EB yields an antiferromagnetic interface exchange coupling comparable to the bulk exchange constant of the AFM phase. We also observe training effect of the EB, which is successfully described in terms of a preexisting relaxation model developed for other classical EB systems. This work provides the first evidence of intrinsic interface exchange coupling in phase separated manganites.

Original languageEnglish
Article number174422
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume72
Issue number17
DOIs
StatePublished - 1 Nov 2005
Externally publishedYes

Fingerprint

Dive into the research topics of 'Intrinsic interface exchange coupling of ferromagnetic nanodomains in a charge ordered manganite'. Together they form a unique fingerprint.

Cite this