Magnetic phases of magnetic polarons in diluted magnetic semiconductor nanocrystals

2009 ◽  
Vol 6 (4) ◽  
pp. 829-832 ◽  
Author(s):  
Shun-Jen Cheng
Keyword(s):  
Diluted Magnetic Semiconductor ◽  
Semiconductor Nanocrystals ◽  
Magnetic Semiconductor ◽  
Magnetic Phases ◽  
Magnetic Polarons ◽  
Diluted Magnetic

Carrier-Concentration-Dependent Magnetic Properties of the Diluted Magnetic Semiconductor SnMnte

1989 ◽  
Vol 151 ◽  
Author(s):  
H. J. M. Swagten ◽  
S. J. E. A. Eltink ◽  
W. J. M. De Jonge
Keyword(s):  
Magnetic Properties ◽  
Low Temperature ◽  
Experimental Evidence ◽  
Carrier Concentration ◽  
Diluted Magnetic Semiconductor ◽  
Critical Concentration ◽  
Magnetic Semiconductor ◽  
Magnetic Phases ◽  
Diluted Magnetic ◽  
Ferromagnetic Interactions

ABSTRACTIn this paper experimental evidence is presented for the carrier concentration dependence of the magnetic properties of Sn0.97Mn0.03Te, yielding a critical concentration above which ferromagnetic interactions are dominant. The observed behavior can be fairly well explained within a modified RKKY-model. Preliminary experiments on the low temperature magnetic phases indicate re-entrant spinglass behavior, which is qualitatively described with the spinglass model of Sherrington and Kirkpatrick.

scholarly journals Diluted Magnetic Semiconductor Nanocrystals in Glass Matrix

Nanocrystals ◽  
10.5772/10094 ◽  
2010 ◽  
Author(s):  
Noelio Oliveira ◽  
Ernesto Soares De Freitas Neto ◽  
Ricardo Souza Da Silv
Keyword(s):  
Glass Matrix ◽  
Diluted Magnetic Semiconductor ◽  
Semiconductor Nanocrystals ◽  
Magnetic Semiconductor ◽  
Diluted Magnetic

Exciton magnetic polarons in asymmetric diluted magnetic semiconductor quantum wells

1999 ◽  
Vol 60 (16) ◽  
pp. 11545-11549 ◽  
Author(s):  
T. Stirner ◽  
J. Miao ◽  
W. E. Hagston ◽  
S. Takeyama ◽  
G. Karczewski ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Diluted Magnetic Semiconductor ◽  
Magnetic Semiconductor ◽  
Magnetic Polarons ◽  
Semiconductor Quantum Wells ◽  
Diluted Magnetic

Insight into the origin of ferromagnetism in Fe-doped ZnO diluted magnetic semiconductor nanocrystals: an EXFAS study of local structure

RSC Advances ◽  
2015 ◽  
Vol 5 (115) ◽  
pp. 94658-94669 ◽  
Author(s):  
Shiv Kumar ◽  
Nidhi Tiwari ◽  
S. N. Jha ◽  
S. Chatterjee ◽  
D. Bhattacharyya ◽  
...  
Keyword(s):  
Local Structure ◽  
Diluted Magnetic Semiconductor ◽  
Semiconductor Nanocrystals ◽  
Magnetic Semiconductor ◽  
Doped Zno ◽  
Diluted Magnetic ◽  
Insight Into

XANES study at Fe edge (a) and signature of ferromagnetism (b) of Zn1−xFexO nanoparticles.

Transient Spectroscopy and Related Optical Studies in Diluted Magnetic Semiconductor Superlattices

1986 ◽  
Vol 89 ◽  
Author(s):  
A. V. Nurmikko ◽  
L. A. Kolodziejski ◽  
R. L. Gunshor
Keyword(s):  
Magnetic Semiconductors ◽  
Diluted Magnetic Semiconductor ◽  
Magnetic Semiconductor ◽  
Electronic Excitations ◽  
Magnetic Polarons ◽  
Antiferromagnetic Ordering ◽  
Ultrathin Layers ◽  
Diluted Magnetic ◽  
Transient Spectroscopy ◽  
State Of Affairs

AbstractRecent successes in molecular beam (MBE) epitaxial growth of diluted magnetic semiconductor (DMS) artificial microstructures are now generating structures in which optically excited lower dimensional electronic and magnetic phenomena can be investigated. We consider an example which illustrates the present early state of affairs: transient magnetic polarons in connection with localized quasi 2-dimensional (2D) electronic excitations. We also comment on recent measurements and antiferromagnetic ordering in ultrathin layers in magnetic semiconductors.

scholarly journals Magneto-Optical Properties of CdMnTe Diluted Magnetic Semiconductor Nanoparticles Prepared by Physical Methods

2015 ◽  
Vol 16 (2) ◽  
pp. 297-301
Author(s):  
І.D. Stolyarchuk
Keyword(s):  
Magnetic Field ◽  
Optical Absorption ◽  
Absorption Spectra ◽  
Spin Exchange ◽  
Diluted Magnetic Semiconductor ◽  
Semiconductor Nanocrystals ◽  
Magnetic Semiconductor ◽  
Wavelength Shift ◽  
Tem Analysis ◽  
Diluted Magnetic

Nanoparticles of Cd1-xMnxTe have been studied by optical absorption and photoluminescence in applied magnetic field. The pulsed laser deposition technique and ball milling were used for fabrication of the samples of diluted magnetic semiconductor nanocrystals. The performed transmission electron microscopy (TEM) analysis suggests of spherical shape of nanostructures. In optical absorption spectra of the Cd1-xMnxTe nanoparticles short wavelength shift of the absorption edge due to confinement effect has been observed.  In magnetic field shifts of the absorption spectra and maximum of the peak of photoluminescence towards long wavelength was observed due to the strong spin-exchange interaction between band carriers and magnetic ions. The linear magnetic field dependence of the Zeeman shifts of the maximum of photoluminescence for nanoparticles with low mangan content suggest of increase of the role pairs and antiferromagnetic interaction between Mn2+ ions

Structural and optical properties of sol–gel derived Cr-doped ZnO diluted magnetic semiconductor nanocrystals: an EXAFS study to relate the local structure

RSC Advances ◽  
2016 ◽  
Vol 6 (109) ◽  
pp. 107816-107828 ◽  
Author(s):  
Shiv Kumar ◽  
N. Tiwari ◽  
S. N. Jha ◽  
S. Chatterjee ◽  
D. Bhattacharyya ◽  
...  
Keyword(s):  
Optical Properties ◽  
Diluted Magnetic Semiconductor ◽  
Semiconductor Nanocrystals ◽  
Sol Gel ◽  
Magnetic Semiconductor ◽  
Structural And Optical Properties ◽  
Exafs Study ◽  
Doped Zno ◽  
Complementary Techniques ◽  
Diluted Magnetic

Structural, local structural and optical properties of sol–gel derived Zn1−xCrxO (0 ≤ x ≤ 0.06) nanoparticles have been thoroughly studied by several complementary techniques.

Magnetic polarons in a single diluted magnetic semiconductor quantum dot

2000 ◽  
Vol 62 (12) ◽  
pp. R7767-R7770 ◽  
Author(s):  
A. A. Maksimov ◽  
G. Bacher ◽  
A. McDonald ◽  
V. D. Kulakovskii ◽  
A. Forchel ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Diluted Magnetic Semiconductor ◽  
Magnetic Semiconductor ◽  
Semiconductor Quantum Dot ◽  
Magnetic Polarons ◽  
Diluted Magnetic
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