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Phase transition characteristics of Al-Sb phase change materials for phase change memory application
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10.1063/1.4818662
/content/aip/journal/apl/103/7/10.1063/1.4818662
http://aip.metastore.ingenta.com/content/aip/journal/apl/103/7/10.1063/1.4818662

Figures

Image of FIG. 1.
FIG. 1.

(a) Sheet resistance vs. temperature of Al-Sb films with a heating rate of 40 °C/min. Inset is s of crystallization calculated from Kissinger's method; (b) plots of data lifetime vs. 1/ , showing the data retention capability of Al-Sb films.

Image of FIG. 2.
FIG. 2.

(a) The temperature dependence of XRD patterns for AlSb film from room temperature to 350 °C at 40 °C/min; (b) the corresponding calculated crystal grain size and FWHM in the Sb (012) peak as a function of annealing temperature.

Image of FIG. 3.
FIG. 3.

Plots of () vs. for amorphous Al-Sb films. Inset shows the variation of absorption coefficient () with photon energy ().

Image of FIG. 4.
FIG. 4.

Raman scattering spectra of (a) as-deposited and (b) 250 °C-annealed Al-Sb films. All the spectra between 230 and 360 cm are scaled to higher intensity for comparison, and the scaling factors are given in the figure.

Image of FIG. 5.
FIG. 5.

(a) TEM BF image and the corresponding SAED patterns of the crystalline AlSb phase change material. The HRTEM images from the red boxes in (a) are shown in (b) region A and (c) region B with the corresponding FFT diffraction patterns in the insets, indicating the polycrystalline (b) and amorphous (c) structures, respectively.

Image of FIG. 6.
FIG. 6.

curves of PCM cell using AlSb film with different reset pulse widths. Inset presents curves obtained with dc mode. Each curve in the figure is representative of more than 10 PCM cells.

Tables

Generic image for table
Table I.

Composition of Al-Sb films and the corresponding , , and . The s estimated from isothermal and non-isothermal process are quite similar and the adjusted statistical coefficient of determination ( ) is very close to 1 in both processes, representing a reliable fit.

Generic image for table
Table II.

Optical parameters, , , and for amorphous Al-Sb films.

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/content/aip/journal/apl/103/7/10.1063/1.4818662
2013-08-16
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Phase transition characteristics of Al-Sb phase change materials for phase change memory application
http://aip.metastore.ingenta.com/content/aip/journal/apl/103/7/10.1063/1.4818662
10.1063/1.4818662
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