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Phonon dynamics of Zn(Mg,Cd)O alloy nanostructures and their phase segregation
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10.1063/1.3243341
/content/aip/journal/jap/106/8/10.1063/1.3243341
http://aip.metastore.ingenta.com/content/aip/journal/jap/106/8/10.1063/1.3243341

Figures

Image of FIG. 1.
FIG. 1.

Representative TEM images of (a) undoped ZnO nanoparticles of , (b) commercial ZnO of size 100–500 nm (used as reference), (c) , and (d) nanostructures.

Image of FIG. 2.
FIG. 2.

XRD data of selected samples as indicated on the graph. All the samples show wurtzite ZnO peaks as indexed for bulk ZnO. Distinct peaks for and CdO appears (as indexed on the respective curve) in case of phase segregated and nanostructures.

Image of FIG. 3.
FIG. 3.

Nonresonant Raman spectra of (a) Bulk ZnO powder and (b) series of and alloy nanostructures. Assigned Raman modes are indicated on the graph. A sharp peak at is originated from the glass substrate (c). The LO mode of nanostructures is fitted by two Gaussian to resolve (LO) and (LO) modes of ZnO. Observed shift in the (LO) mode with Mg and Cd concentration is plotted in (d).

Image of FIG. 4.
FIG. 4.

The FTIR spectra of , , and phase segregated MgZnO alloy as indicated on the graph.

Image of FIG. 5.
FIG. 5.

Variation in the IR modes of and alloy nanoparticles as indicated on the graph.

Tables

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Table I.

Size, morphology, and chemical compositions of the nanostructures investigated.

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Table II.

Assignments of characteristic Raman modes for bulk ZnO powder.

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Table III.

Raman modes of ZnO and its alloy nanostructures.

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Table IV.

IR active vibration modes for ZnO and its alloy nanostructures.

Generic image for table
Table V.

The IR band and local structure data of Zn bonds of (, for Mg, and for Cd) samples.

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/content/aip/journal/jap/106/8/10.1063/1.3243341
2009-10-21
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Phonon dynamics of Zn(Mg,Cd)O alloy nanostructures and their phase segregation
http://aip.metastore.ingenta.com/content/aip/journal/jap/106/8/10.1063/1.3243341
10.1063/1.3243341
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