Reversed gyroremanent magnetization in γ-Fe2O3 participate systems

Tiberiu Salaoru; David K. Potter; Laurenţiu Stoleriu; Constantin Pǎpuşoi; Alexandru Stancu

doi:10.1109/TMAG.2004.830458

Reversed gyroremanent magnetization in γ-Fe₂O₃ participate systems

Tiberiu Salaoru, David K. Potter, Laurenţiu Stoleriu, Constantin Pǎpuşoi, Alexandru Stancu

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

3 Citations (Scopus)

Abstract

Gyroremanent magnetization (GRM) has previously been studied in connection with the well-known technique of ac demagnetization, which is used extensively in rock magnetism, palaeomagnetism and magnetic materials research. The "normal" GRM effect was explained by Stephenson in 1980, but recently a "reversed" GRM was obtained in a CrO₂ particle system by Madsen. We have studied samples of ?-Fe₂O₃ particles (commercial magnetic recording tapes) and have identified samples with both "normal" and "reversed" GRM. The amplitude of the ac field was found to essentially influence the character of the GRM. In this paper, we also present micromagnetic simulations of the GRM in systems of single-domain particles and the results are discussed. Both "normal" and "reversed" GRM have been obtained in the simulations.

Original language	English
Pages (from-to)	2407-2409
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	40
Issue number	4 II
DOIs	https://doi.org/10.1109/TMAG.2004.830458
Publication status	Published - Jul 2004

Keywords

Gyroremanent magnetization (GRM)
Magnetization processes
Micromagnetic model
Particulate media
Rock magnetism

Access to Document

10.1109/TMAG.2004.830458

Cite this

@article{b790d32f5aab48d28015437f5b314615,

title = "Reversed gyroremanent magnetization in γ-Fe2O3 participate systems",

abstract = "Gyroremanent magnetization (GRM) has previously been studied in connection with the well-known technique of ac demagnetization, which is used extensively in rock magnetism, palaeomagnetism and magnetic materials research. The {"}normal{"} GRM effect was explained by Stephenson in 1980, but recently a {"}reversed{"} GRM was obtained in a CrO2 particle system by Madsen. We have studied samples of ?-Fe2O3 particles (commercial magnetic recording tapes) and have identified samples with both {"}normal{"} and {"}reversed{"} GRM. The amplitude of the ac field was found to essentially influence the character of the GRM. In this paper, we also present micromagnetic simulations of the GRM in systems of single-domain particles and the results are discussed. Both {"}normal{"} and {"}reversed{"} GRM have been obtained in the simulations.",

keywords = "Gyroremanent magnetization (GRM), Magnetization processes, Micromagnetic model, Particulate media, Rock magnetism",

author = "Tiberiu Salaoru and Potter, {David K.} and Lauren{\c t}iu Stoleriu and Constantin Pǎpu{\c s}oi and Alexandru Stancu",

year = "2004",

month = jul,

doi = "10.1109/TMAG.2004.830458",

language = "English",

volume = "40",

pages = "2407--2409",

journal = "IEEE Transactions on Magnetics",

issn = "0018-9464",

publisher = "IEEE",

number = "4 II",

}

TY - JOUR

T1 - Reversed gyroremanent magnetization in γ-Fe2O3 participate systems

AU - Salaoru, Tiberiu

AU - Potter, David K.

AU - Stoleriu, Laurenţiu

AU - Pǎpuşoi, Constantin

AU - Stancu, Alexandru

PY - 2004/7

Y1 - 2004/7

N2 - Gyroremanent magnetization (GRM) has previously been studied in connection with the well-known technique of ac demagnetization, which is used extensively in rock magnetism, palaeomagnetism and magnetic materials research. The "normal" GRM effect was explained by Stephenson in 1980, but recently a "reversed" GRM was obtained in a CrO2 particle system by Madsen. We have studied samples of ?-Fe2O3 particles (commercial magnetic recording tapes) and have identified samples with both "normal" and "reversed" GRM. The amplitude of the ac field was found to essentially influence the character of the GRM. In this paper, we also present micromagnetic simulations of the GRM in systems of single-domain particles and the results are discussed. Both "normal" and "reversed" GRM have been obtained in the simulations.

AB - Gyroremanent magnetization (GRM) has previously been studied in connection with the well-known technique of ac demagnetization, which is used extensively in rock magnetism, palaeomagnetism and magnetic materials research. The "normal" GRM effect was explained by Stephenson in 1980, but recently a "reversed" GRM was obtained in a CrO2 particle system by Madsen. We have studied samples of ?-Fe2O3 particles (commercial magnetic recording tapes) and have identified samples with both "normal" and "reversed" GRM. The amplitude of the ac field was found to essentially influence the character of the GRM. In this paper, we also present micromagnetic simulations of the GRM in systems of single-domain particles and the results are discussed. Both "normal" and "reversed" GRM have been obtained in the simulations.

KW - Gyroremanent magnetization (GRM)

KW - Magnetization processes

KW - Micromagnetic model

KW - Particulate media

KW - Rock magnetism

UR - http://www.scopus.com/inward/record.url?scp=4444251640&partnerID=8YFLogxK

U2 - 10.1109/TMAG.2004.830458

DO - 10.1109/TMAG.2004.830458

M3 - Article

SN - 0018-9464

VL - 40

SP - 2407

EP - 2409

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 4 II

ER -

Reversed gyroremanent magnetization in γ-Fe₂O₃ participate systems

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this