Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 242-244 |
| Journal | Physica Status Solidi: Rapid Research Letters |
| Volume | 3 |
| Issue number | 7-8 |
| DOIs | |
| Publication status | Published - 2009 |
| MoE publication type | A1 Journal article-refereed |
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Hysteretic magnetoresistance in polymeric diodes. / Majumdar, Sayani; Majumdar, Himadri S.; Aarnio, Harri; Osterbacka, Ronald.
In: Physica Status Solidi: Rapid Research Letters, Vol. 3, No. 7-8, 2009, p. 242-244.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Hysteretic magnetoresistance in polymeric diodes
AU - Majumdar, Sayani
AU - Majumdar, Himadri S.
AU - Aarnio, Harri
AU - Osterbacka, Ronald
PY - 2009
Y1 - 2009
N2 - We report on hysteretic organic magnetoresistance (OMAR) in polymeric diodes. We found that magnitude and lineshape of OMAR depend strongly on the scan speed of the magnetic field and on the time delay between two successive measurements. The time‐dependent OMAR phenomenon is universal for diodes made with various polymers. However, the width and magnitude of OMAR varied with the polymeric material. The suggestive reason for this hysteretic behavior is trapped carriers, which in presence of a magnetic field change the ferromagnetic ground‐state of the polymer leading to a long spin relaxation time. These experimental observations are significant for clarification of the OMAR phenomenon.
AB - We report on hysteretic organic magnetoresistance (OMAR) in polymeric diodes. We found that magnitude and lineshape of OMAR depend strongly on the scan speed of the magnetic field and on the time delay between two successive measurements. The time‐dependent OMAR phenomenon is universal for diodes made with various polymers. However, the width and magnitude of OMAR varied with the polymeric material. The suggestive reason for this hysteretic behavior is trapped carriers, which in presence of a magnetic field change the ferromagnetic ground‐state of the polymer leading to a long spin relaxation time. These experimental observations are significant for clarification of the OMAR phenomenon.
U2 - 10.1002/pssr.200903193
DO - 10.1002/pssr.200903193
M3 - Article
VL - 3
SP - 242
EP - 244
JO - Physica Status Solidi: Rapid Research Letters
JF - Physica Status Solidi: Rapid Research Letters
SN - 1862-6254
IS - 7-8
ER -