Magnetic properties of MnSb inclusions formed in GaSb matrix directly during molecular beam epitaxial growth

Journal Article · Fri Apr 01 00:00:00 EDT 2011 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3562171· OSTI ID:21538229

Lawniczak-Jablonska, Krystyna; Wolska, Anna; Klepka, Marcin T; Kret, Slawomir; Kurowska, Boguslawa; Kowalski, Bogdan J ^[1]; Gosk, Jacek ^[2]; Twardowski, Andrzej; Wasik, Dariusz; Kwiatkowski, Adam ^[2]; Sadowski, Janusz ^[1]

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1. Institute of Physics PAS, al. Lotnikow 32/46, 02-668 Warsaw (Poland)
2. Institute of Experimental Physics, University of Warsaw, Hoza 69, 00-681 Warsaw (Poland)

Despite of intensive search for the proper semiconductor base materials for spintronic devices working at room temperature no appropriate material based on ferromagnetic semiconductors has been found so far. We demonstrate that the phase segregated system with MnSb hexagonal inclusions inside the GaSb matrix, formed directly during the molecular beam epitaxial growth reveals the ferromagnetic properties at room temperature and is a good candidate for exploitation in spintronics. Furthermore, the MnSb inclusions with only one crystalline structure were identified in this GaMn:MnSb granular material. The SQUID magnetometry confirmed that this material exhibits ferromagnetic like behavior starting from helium up to room temperature. Moreover, the magnetic anisotropy was found which was present also at room temperature, and it was proved that by choosing a proper substrate it is possible to control the direction of easy axis of inclusions' magnetization moment between in-plane and out-of-plane; the latter is important in view of potential applications in spintronic devices.

• OSTI ID: 21538229
• Journal Information: Journal of Applied Physics, Vol. 109, Issue 7; Other Information: DOI: 10.1063/1.3562171; (c) 2011 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANISOTROPY
ANTIMONY ALLOYS
GALLIUM ALLOYS
GALLIUM ANTIMONIDES
GRANULAR MATERIALS
HELIUM
MAGNETIC PROPERTIES
MAGNETIZATION
MAGNETOMETERS
MANGANESE ALLOYS
MOLECULAR BEAM EPITAXY
SEMICONDUCTOR MATERIALS
SQUID DEVICES
SUBSTRATES
TEMPERATURE RANGE 0273-0400 K
ALLOYS
ANTIMONIDES
ANTIMONY COMPOUNDS
CRYSTAL GROWTH METHODS
ELECTRONIC EQUIPMENT
ELEMENTS
EPITAXY
EQUIPMENT
FLUIDS
FLUXMETERS
GALLIUM COMPOUNDS
GASES
MATERIALS
MEASURING INSTRUMENTS
MICROWAVE EQUIPMENT
NONMETALS
PHYSICAL PROPERTIES
PNICTIDES
RARE GASES
SUPERCONDUCTING DEVICES
TEMPERATURE RANGE
TRANSITION ELEMENT ALLOYS