Ion-beam-induced ferromagnetism in Ca-doped LaMnO3 thin films grown on Si (100). Issue 3 (3rd April 2018)

• Record Type: Journal Article
• Authors: Sultan, Khalid; Aarif ul Islam, Shah; Habib, Zubida; Ikram, M.; Asokan, K.
• Is Part Of: Radiation effects and defects in solids. Volume 173:Issue 3/4(2018)
• Page Start: 184
• Page End: 197
• Publication Date: 2018-04-03
• Subjects: Ceramics -- ferromagnetism -- magnetic ordering; Radiation chemistry -- Periodicals; Crystals -- Defects -- Periodicals; Crystal lattices -- Periodicals; 530.416
• DOI: 10.1080/10420150.2018.1424846
• Languages: English
• ISSNs: 1042-0150

Abstract

ABSTRACT: The ion-bean-induced room temperature ferromagnetic ordering in pulsed laser deposited Ca-doped LaMnO3 thin films grown on Si (100) are presented in the present study. In addition to this, changes bought by the ion beam in structural, morphological and electrical properties are presented. Dense electronic excitation produced by high energy 120 MeV Ag 9+ ion irradiation causes change in surface roughness, crystallinity and strain. It is also evident that these excitations induce the magnetic ordering in this system. The observed modifications are due to the large electronic energy deposited by swift heavy ion irradiation. The appearance of ferromagnetism at 300 K in these samples after irradiation may be attributed to the canting of the antiferromagnetically ordered spins due to the structural distortion. It is observed that the irradiated films show higher resistance than unirradiated films for all the compositions.