Synthesis of γ’-Fe4N powder in liquid nitrogen
A novel synthesis approach is developed to prepare nanocrystalline γ’-Fe4N in this paper. High energy cryomilling approach in liquid nitrogen is used to prepare the sample. A FexN amorphous state with a degree of metastable supersaturation of N into Fe is obtained. The crystalline size after higher...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2019-03-01
|
| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.5080161 |
| id |
doaj-e2f2494f851440c78692d9d1dc03b0e2 |
|---|---|
| record_format |
Article |
| spelling |
doaj-e2f2494f851440c78692d9d1dc03b0e22020-11-24T22:15:43ZengAIP Publishing LLCAIP Advances2158-32262019-03-0193035215035215-410.1063/1.5080161019992ADVSynthesis of γ’-Fe4N powder in liquid nitrogenYanfeng Jiang0Linxin Jiang1College of Internet of Thing (IoT), Jiangnan University, Wuxi 214122, ChinaDepartment of Chemical Engineering, UC Berkeley, Berkeley, California 94710, USAA novel synthesis approach is developed to prepare nanocrystalline γ’-Fe4N in this paper. High energy cryomilling approach in liquid nitrogen is used to prepare the sample. A FexN amorphous state with a degree of metastable supersaturation of N into Fe is obtained. The crystalline size after higher energy cryomilling approach is characterized to be 40 ∼ 80 nm. A post-annealing among 200 ∼ 300 °C for 10 minutes results in phase transformation from α-iron into γ’-Fe4N. Its magnetic properties and structures are characterized, showing good soft magnetic material with ultralow coercivity (0.7 Oe). It shows high electrical resistivity (375 μΩ·m) at room temperature. The feasibility of the ball milling synthesis approach in liquid nitrogen is verified, suggesting a novel approach for the soft magnetic material preparation.http://dx.doi.org/10.1063/1.5080161 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Yanfeng Jiang Linxin Jiang |
| spellingShingle |
Yanfeng Jiang Linxin Jiang Synthesis of γ’-Fe4N powder in liquid nitrogen AIP Advances |
| author_facet |
Yanfeng Jiang Linxin Jiang |
| author_sort |
Yanfeng Jiang |
| title |
Synthesis of γ’-Fe4N powder in liquid nitrogen |
| title_short |
Synthesis of γ’-Fe4N powder in liquid nitrogen |
| title_full |
Synthesis of γ’-Fe4N powder in liquid nitrogen |
| title_fullStr |
Synthesis of γ’-Fe4N powder in liquid nitrogen |
| title_full_unstemmed |
Synthesis of γ’-Fe4N powder in liquid nitrogen |
| title_sort |
synthesis of γ’-fe4n powder in liquid nitrogen |
| publisher |
AIP Publishing LLC |
| series |
AIP Advances |
| issn |
2158-3226 |
| publishDate |
2019-03-01 |
| description |
A novel synthesis approach is developed to prepare nanocrystalline γ’-Fe4N in this paper. High energy cryomilling approach in liquid nitrogen is used to prepare the sample. A FexN amorphous state with a degree of metastable supersaturation of N into Fe is obtained. The crystalline size after higher energy cryomilling approach is characterized to be 40 ∼ 80 nm. A post-annealing among 200 ∼ 300 °C for 10 minutes results in phase transformation from α-iron into γ’-Fe4N. Its magnetic properties and structures are characterized, showing good soft magnetic material with ultralow coercivity (0.7 Oe). It shows high electrical resistivity (375 μΩ·m) at room temperature. The feasibility of the ball milling synthesis approach in liquid nitrogen is verified, suggesting a novel approach for the soft magnetic material preparation. |
| url |
http://dx.doi.org/10.1063/1.5080161 |
| work_keys_str_mv |
AT yanfengjiang synthesisofgfe4npowderinliquidnitrogen AT linxinjiang synthesisofgfe4npowderinliquidnitrogen |
| _version_ |
1725793578942201856 |