Annealing and neutron-irradiation effects on the permeability of Fe86Zr7B6Cu1

Kim, Y.S.; Phan, Manh‐Huong; Sui, Yu; Kim, K.S.; Lee, H.B.; Kim, B.G.; Kang, Young Hwan

doi:10.1016/s0921-4526(02)01776-3

Cited by 7 publications

(7 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, neutron technology can be applied effectively toward the development of new materials. Recently, several efforts have been made at HANARO to evaluate the effect of neutron irradiation on the physical properties of various functional materials [5]- [8].…”

Section: Irradiation Tests Of Electro-magnetic Materialsmentioning

confidence: 99%

“…Although several impressive effects of neutron irradiation on the properties of electronic materials were reported at HANARO [5]- [8], it was difficult to interpret clearly their behaviors due to the broad energy spectrum of the neutron as shown in Figure 3. The undesirable effects due to thermal and fast neutrons should be reduced to separate each neutron's effect on the properties of the sample.…”

Section: Additional Work Near Futurementioning

confidence: 99%

See 1 more Smart Citation

Neutron Irradiation of Electronic Materials at HANARO

Choo¹,

Cho²,

Jun³

et al. 2014

JAMP

View full text Add to dashboard Cite

HANARO, a 30 MW open-pool type multipurpose research reactor, has been operated as a platform for nuclear researches in Korea, and irradiation facilities have been mainly utilized for various nuclear material irradiation tests requested by users. Although most irradiation tests have been related to national R&D relevant to nuclear power, demand for neutron irradiation of electromagnetic materials is increasing rapidly at HANARO. Another research reactor, which is named the KIJANG research reactor (KJRR), is under construction in Korea. KJRR is dedicated to increasing the national radio-isotopes supply capacity and to the irradiation facilities including Neutron Transmutation Doping (NTD) facilities for power semiconductor production in a large scale and fast neutron irradiation (FNI) facility for fast neutron irradiation. The NTD and FNI facilities in the KJRR reactor can be effectively utilized on the study of separated effect of thermal and fast neutron irradiations on the properties of electromagnetic materials. HANARO will also specialize more on irradiation research, including neutron irradiation of electronic materials. The research status and possibility of new electromagnetic materials using neutron irradiation at HANARO are surveyed to ascertain the utilization of neutron irradiation technology in electromagnetic material researches.

show abstract

Section: Irradiation Tests Of Electro-magnetic Materialsmentioning

confidence: 99%

Section: Additional Work Near Futurementioning

confidence: 99%

Neutron Irradiation of Electronic Materials at HANARO

Choo¹,

Cho²,

Jun³

et al. 2014

JAMP

View full text Add to dashboard Cite

show abstract

“…Brown et al 4 reported that, for both amorphous and crystalline magnetic alloys, the permeability decreased with increasing neutron fluence as a consequence of the increase of point defects produced by the irradiation and the domain walls pinning at defect clusters created by collision cascade. More recently, however, Kim et al 7 reported that neutron irradiation decreased the permeability of a nanocrystalline alloy but had a negligible effect on the as-quenched amorphous alloy. It is assumed that this discrepancy might be due to the irradiation with different neutron fluence.…”

mentioning

confidence: 99%

“…1 In the present work, we investigate a novel processing technique involving neutron irradiation. Despite a number of previous studies, [2][3][4][5][6][7] the understanding of the neutron irradiation effect on magnetic properties of amorphous and crystalline magnetic alloys remains controversial in part due to the complex nature of the problem. For instance, an increase in the permeability was revealed by relative permeability measurements of an as-quenched amorphous alloy irradiated in a low-field region with a 2.25 MeV proton fluence, 2,3 was ascribed to the reduction of internal stresses.…”

mentioning

confidence: 99%

“…It is assumed that this discrepancy might be due to the irradiation with different neutron fluence. 4,7 Since the magnetization processes 6 are influenced by external and internal stresses originating at defects, [2][3][4] the contribution of domain wall motion and rotational magnetization processes to the permeability of neutron irradiated amorphous mag-netic materials is probably related to the neutron fluence.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Neutron irradiation effect on permeability and magnetoimpedance of amorphous and nanocrystalline magnetic materials

et al. 2005

View full text Add to dashboard Cite

In this paper we provide physical insights into the effect of neutron irradiation on permeability spectra and magnetoimpedance of amorphous and nanocrystalline alloys. Experimental results indicate that neutron irradiation increases the permeability of the amorphous alloy but decreases the permeability of the nanocrystalline alloy in a high frequency region ͑f ജ 1 MHz͒, while the opposite is found in a low frequency region ͑f Ͻ 1 MHz͒. A careful examination of sample temperature during neutron irradiation process excludes thermal annealing as a possible origin of the observed irradiation effect. The magnetic relaxations in the low and high frequency regions are ascribed to the irreversible domain wall motion and reversible rotational magnetization, respectively. The enhancement in the permeability of the amorphous alloy upon neutron irradiation leads to a parallel improvement of magnetoimpedance response of the material, which is of practical use for sensing applications.

show abstract