FMR studies on Fe/Cr/Fe trilayer ultrathin films; magneto-crystalline anisotropy and electromagnetic impedance

Autor:	Alka V. Kuanr, Bijoy K. Kuanr
Rok vydání:	1997
Předmět:	Condensed Matter::Materials Science Materials science Magnetoresistance Condensed matter physics Antiferromagnetism Wave impedance Giant magnetoresistance Atmospheric temperature range Condensed Matter Physics Anisotropy Ferromagnetic resonance Microwave Electronic Optical and Magnetic Materials
Zdroj:	Journal of Magnetism and Magnetic Materials. 165:275-279
ISSN:	0304-8853
DOI:	10.1016/s0304-8853(96)00528-8
Popis:	We are reporting the first measurement of temperature-dependent magneto-crystalline anisotropy parameters from the angular variation of surface impedance and resonance frequency data on a series of Fe/Cr/Fe trilayer ultrathin films on GaAs (100) substrates grown epitaxially by MBE from frequency-swept ferromagnetic resonance (FMR) experiments at X-band. Microwave giant magneto-resistance (μW-GMR) and microwave anisotropic-magneto-resistance (μW-AMR) as a function of temperature are derived from the field-dependent microwave surface impedance data. We have observed oscillatory antiferromagnetic exchange coupling as a function of Cr spacer layer thickness with reduced magnitude in comparison to the earlier results over the temperature range of 600 K.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::085f4bc4a884b055ed7625773f21443e https://doi.org/10.1016/s0304-8853(96)00528-8 Zobrazit plný text záznamu Full Text from ScienceDirect