Abstract
Iron ions were implanted into a polymer, Kapton, at 300 keV to a dose of 1017 atoms cm-2 in order to modify magnetic properties. Magnetization curves were measured by a superconducting quantum interference device magnetometer at 4.2, 77 and 300 K in fields up to 40 kG. The as-implanted sample exhibits paramagnetic behaviour at all temperatures. Annealing in vacuum caused ferromagnetic behaviour at 4.2 K. Unexpectantly, it has been found that the magnetic moments of all samples are abnormally small at low temperatures. The magnetization curves can be explained by taking into account the existence of magnetic clusters and free iron ions with antiferromagnetic interactions.
| Original language | English |
|---|---|
| Pages (from-to) | 261-265 |
| Number of pages | 5 |
| Journal | Solid State Communications |
| Volume | 92 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1994 |
| Externally published | Yes |
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Keywords
- A. disordered system A. polymers
- and ion impact
- and plastics A. spin glasses D. radiation effects E. atom
- elastomers
- molecule
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
Cite this
Evidence of antiferromagnetic interactions in iron-implanted kapton. / Ohkubo, M.; Kobayashi, Naoto; Hayashi, N.
In: Solid State Communications, Vol. 92, No. 3, 1994, p. 261-265.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Evidence of antiferromagnetic interactions in iron-implanted kapton
AU - Ohkubo, M.
AU - Kobayashi, Naoto
AU - Hayashi, N.
PY - 1994
Y1 - 1994
N2 - Iron ions were implanted into a polymer, Kapton, at 300 keV to a dose of 1017 atoms cm-2 in order to modify magnetic properties. Magnetization curves were measured by a superconducting quantum interference device magnetometer at 4.2, 77 and 300 K in fields up to 40 kG. The as-implanted sample exhibits paramagnetic behaviour at all temperatures. Annealing in vacuum caused ferromagnetic behaviour at 4.2 K. Unexpectantly, it has been found that the magnetic moments of all samples are abnormally small at low temperatures. The magnetization curves can be explained by taking into account the existence of magnetic clusters and free iron ions with antiferromagnetic interactions.
AB - Iron ions were implanted into a polymer, Kapton, at 300 keV to a dose of 1017 atoms cm-2 in order to modify magnetic properties. Magnetization curves were measured by a superconducting quantum interference device magnetometer at 4.2, 77 and 300 K in fields up to 40 kG. The as-implanted sample exhibits paramagnetic behaviour at all temperatures. Annealing in vacuum caused ferromagnetic behaviour at 4.2 K. Unexpectantly, it has been found that the magnetic moments of all samples are abnormally small at low temperatures. The magnetization curves can be explained by taking into account the existence of magnetic clusters and free iron ions with antiferromagnetic interactions.
KW - A. disordered system A. polymers
KW - and ion impact
KW - and plastics A. spin glasses D. radiation effects E. atom
KW - elastomers
KW - molecule
UR - http://www.scopus.com/inward/record.url?scp=0028516071&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0028516071&partnerID=8YFLogxK
U2 - 10.1016/0038-1098(94)90888-5
DO - 10.1016/0038-1098(94)90888-5
M3 - Article
AN - SCOPUS:0028516071
VL - 92
SP - 261
EP - 265
JO - Solid State Communications
JF - Solid State Communications
SN - 0038-1098
IS - 3
ER -