Applied magnetic field rejects the coating of ferromagnetic carbon from the surface of ferromagnetic cobalt:: RAPET of CoZr2(acaC)2(OiPr)8

被引：27

作者：

Pol, VG

Pol, SV

Gedanken, A ^{[1
]}

Kessler, VG

Seisenbaeva, GA

Sung, MG

Asai, S

机构：

[1] Bar Ilan Univ, Dept Chem, IL-52900 Ramat Gan, Israel

[2] Bar Ilan Univ, Kanbar Lab Nanomat, Ctr Adv Mat & Nanotechnol, IL-52900 Ramat Gan, Israel

[3] Nagoya Univ, Grad Sch Engn, Dept Mat Proc Engn, Chikusa Ku, Nagoya, Aichi 4648603, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2005年 / 109卷 / 13期

关键词：

D O I：

10.1021/jp0445728

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We present the results of the RAPET (reaction under autogenic pressure at elevated temperatures) dissociation of CoZr2(acac)(2)((OPr)-Pr-i)(8) at 700 degrees C in a closed Swagelok cell under an applied magnetic field of 10 T. It produces a mixture of carbon-coated and noncoated metastable ZrO2 nanoparticles, bare metallic Co nanoparticles, and bare carbon. The same reaction in the absence of a magnetic field produces spherical Co and ZrO2 particles in sizes ranging from 11 to 16 nm and exhibiting, at room temperature, metastable phases: fcc for cobalt and a tetragonal phase for zirconia. The metastable phases of Co and ZrO2 are manifested because of a carbon shell of similar to 4 nm thickness anchored to their surfaces. The effect of an applied magnetic field to synthesize morphologically different, but structurally the same, products is the key topic of the present paper.

引用

页码：6121 / 6125

页数：5

共 18 条

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