Faraday effect in CdMnTe nanocrystals grown by the laser deposition method

Journal Article · Fri Jul 31 00:00:00 EDT 1998 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE1998V028N07ABEH001282· OSTI ID:21437784

Nikitin, P I ^[1]; Savchuk, A I; Stolyarchuk, I D ^[2]; Nikitin, S I ^[3]; Perrone, A ^[4]

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1. A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
2. Yu. Fed'kovich Chernovtsy State University, Chernovtsy (Ukraine)
3. I.N. Ul'yanov Chuvash State University, Cheboksary (Russian Federation)
4. Istituto Nazionale Fisica della Materia and Department of Physics, University of Lecce, Lecce (Italy)

The method of laser deposition from a composite target was used to prepare Cd{sub 1-x}Mn{sub x}Te nanocrystals embedded in an SiO{sub 2} dielectric matrix. A study of the Faraday effect in nanocrystals of this semimagnetic semiconductor revealed enhancement of this effect, compared with bulk crystals. This was attributed to an increase in the oscillator strengths of exciton transitions and to the difference between these strengths in an external magnetic field. At helium temperatures the magnetic field dependence of the Faraday rotation in the nanocrystals was linear in fields up to 200 kOe and the temperature dependence of the rotation in the range 4.2-30 K had a singularity associated with a transition of the nanoparticles from the paramagnetic state to a spin glass. The temperature of this transition in the investigated nanocrystals was higher than the 'cooling' point of bulk semimagnetic semiconductors. (letters to the editor)

• OSTI ID: 21437784
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 28, Issue 7; Other Information: DOI: 10.1070/QE1998v028n07ABEH001282; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CADMIUM TELLURIDES
CRYSTALS
DEPOSITION
DIELECTRIC MATERIALS
FARADAY EFFECT
HELIUM
MAGNETIC FIELDS
MANGANESE TELLURIDES
NANOSTRUCTURES
OSCILLATOR STRENGTHS
PARAMAGNETISM
PARTICLES
SEMICONDUCTOR MATERIALS
SILICON OXIDES
SINGULARITY
SPIN GLASS STATE
TEMPERATURE DEPENDENCE
CADMIUM COMPOUNDS
CHALCOGENIDES
ELEMENTS
FLUIDS
GASES
MAGNETISM
MANGANESE COMPOUNDS
MATERIALS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
RARE GASES
SILICON COMPOUNDS
TELLURIDES
TELLURIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS