Intermetallic phase transformations during low-temperature heat treatment of Al/Ni nanoparticles synthesized within thermally evaporated fatty acid films

Chinmay Damle; Anamika Gopal; Murali Sastry

doi:10.1021/nl015676m

Intermetallic phase transformations during low-temperature heat treatment of Al/Ni nanoparticles synthesized within thermally evaporated fatty acid films

Chinmay Damle, Anamika Gopal, Murali Sastry

Research output: Contribution to journal › Article › Research › peer-review

5 Citations (Scopus)

Abstract

The phase evolution during low-temperature heat treatment of Al and Ni nanoparticles synthesized within thermally evaporated fatty acid films is described. Nanoparticles of aluminum and nickel were grown in thermally evaporated stearic acid (StA) films by immersion of the film sequentially in solutions containing Al³⁺ and Ni²⁺ ions followed by in-situ reduction of the metal ions to yield nanoparticles of Al and Ni of ca. 230 Å diameter within the fatty acid matrix. Thermal treatment of the StA - (Al + Ni) nanocomposite film at 100°C resulted in the formation of a metastable η phase, Al₉Ni₂, which on further heating at 125°C decomposed to form Al₃Ni₂.

Original language	English
Pages (from-to)	365-368
Number of pages	4
Journal	Nano Letters
Volume	2
Issue number	4
DOIs	https://doi.org/10.1021/nl015676m
Publication status	Published - Apr 2002
Externally published	Yes

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title = "Intermetallic phase transformations during low-temperature heat treatment of Al/Ni nanoparticles synthesized within thermally evaporated fatty acid films",

abstract = "The phase evolution during low-temperature heat treatment of Al and Ni nanoparticles synthesized within thermally evaporated fatty acid films is described. Nanoparticles of aluminum and nickel were grown in thermally evaporated stearic acid (StA) films by immersion of the film sequentially in solutions containing Al3+ and Ni2+ ions followed by in-situ reduction of the metal ions to yield nanoparticles of Al and Ni of ca. 230 {\AA} diameter within the fatty acid matrix. Thermal treatment of the StA - (Al + Ni) nanocomposite film at 100°C resulted in the formation of a metastable η phase, Al9Ni2, which on further heating at 125°C decomposed to form Al3Ni2.",

author = "Chinmay Damle and Anamika Gopal and Murali Sastry",

year = "2002",

month = apr,

doi = "10.1021/nl015676m",

language = "English",

volume = "2",

pages = "365--368",

journal = "Nano Letters",

issn = "1530-6984",

publisher = "American Chemical Society",

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T1 - Intermetallic phase transformations during low-temperature heat treatment of Al/Ni nanoparticles synthesized within thermally evaporated fatty acid films

AU - Damle, Chinmay

AU - Gopal, Anamika

AU - Sastry, Murali

PY - 2002/4

Y1 - 2002/4

N2 - The phase evolution during low-temperature heat treatment of Al and Ni nanoparticles synthesized within thermally evaporated fatty acid films is described. Nanoparticles of aluminum and nickel were grown in thermally evaporated stearic acid (StA) films by immersion of the film sequentially in solutions containing Al3+ and Ni2+ ions followed by in-situ reduction of the metal ions to yield nanoparticles of Al and Ni of ca. 230 Å diameter within the fatty acid matrix. Thermal treatment of the StA - (Al + Ni) nanocomposite film at 100°C resulted in the formation of a metastable η phase, Al9Ni2, which on further heating at 125°C decomposed to form Al3Ni2.

AB - The phase evolution during low-temperature heat treatment of Al and Ni nanoparticles synthesized within thermally evaporated fatty acid films is described. Nanoparticles of aluminum and nickel were grown in thermally evaporated stearic acid (StA) films by immersion of the film sequentially in solutions containing Al3+ and Ni2+ ions followed by in-situ reduction of the metal ions to yield nanoparticles of Al and Ni of ca. 230 Å diameter within the fatty acid matrix. Thermal treatment of the StA - (Al + Ni) nanocomposite film at 100°C resulted in the formation of a metastable η phase, Al9Ni2, which on further heating at 125°C decomposed to form Al3Ni2.

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U2 - 10.1021/nl015676m

DO - 10.1021/nl015676m

M3 - Article

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SP - 365

EP - 368

JO - Nano Letters

JF - Nano Letters

SN - 1530-6984

IS - 4

ER -

Intermetallic phase transformations during low-temperature heat treatment of Al/Ni nanoparticles synthesized within thermally evaporated fatty acid films

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