Production of bulk dilute ferromagnetic semiconductor by mechanical milling

Kimishima, Y.; Uehara, M.; Irie, K.; Ishihara, Sakiko; Yamaguchi, Takahiro; Saitoh, M.; Kimoto, Koji; Matsui, Y.

doi:10.1016/j.jmmm.2008.04.025

Cited by 14 publications

(12 citation statements)

References 19 publications

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“…The diluted magnetic semiconductors (DMS) have been studied by the present group for TM-doped nonmagnetic oxides, where TM was transition metal element and non-magnetic oxides were ZnO [1,2,4], TiO 2 [1,3], SnO 2 [5] and Cu 2 O [6].…”

Section: Introductionmentioning

confidence: 99%

Ferromagnetic Behaviors of BaTiO3 Nano-Powder

Ishii

Uehara

Kimishima

2011

Trans. Mat. Res. Soc. Japan

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BaTiO 3 (BTO) nano-particles with the diameter of 15 nm were prepared by mechanical milling using planetary ball mill from the commercial BTO. Rotation speeds were selected as 0, 100, 150, 200, 250 Meanwhile, much attention was paid to the addition of ferromagnetic property to the ferroelectric substance. Especially, nano-BaTiO 3 (BTO) with vacancies has been expected to be a multi-ferroic system which has the ferromagnetic and ferroelectric properties simultaneously [13][14][15][16][17].In the present paper, a new method to prepare the nano-BTO (15 nm) system and the production of ferromagnetism in this system are reported.

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Section: Introductionmentioning

confidence: 99%

Ferromagnetic Behaviors of BaTiO3 Nano-Powder

Ishii

Uehara

Kimishima

2011

Trans. Mat. Res. Soc. Japan

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“…The 500 rpm sample showed the saturation magnetization M s of about 1.2×10 -2 emu/g which is comparable to 1.6×10 -2 emu/g of KNbO 3 [20] and 1.2×10 -2 emu/g of BaTiO 3 with vacancies [14][15][16][17][18]. The magnetization curves of milled sample at 500 rpm and successively sintered sample at 300 o C for 3 hours in air are shown in Fig.7.…”

Section: H (Oe)mentioning

confidence: 84%

“…To investigate the origin of room temperature ferromagnetism in milled KNO 3 , the results of SEM or TEM observations and elemental analysis etc. are needed, which will be reported in the near future.…”

Section: Resultsmentioning

confidence: 99%

“…The inner diameter and volume of each vial were 40 mm and 45 cm 3 , respectively, and the WC balls with 15 mm diameter were used as the grinding media. About 0.5 g of powder specimen of KNO 3 was the starting material.…”

Section: Sample Preparationmentioning

confidence: 99%

“…The diluted magnetic semiconductors (DMS) has been studied by the present group for TMdoped non-magnetic oxides, where TM was transition metal element and non-magnetic oxides were ZnO [1][2][3], TiO 2 [1,4], SnO 2 [5] and Cu 2 O [6]. In the recent years, the other candidate of room temperature ferromagnetism by vacancies were studied theoretically and experimentally for pure CaO [7], CeO 2 , Al 2 O 3 , ZnO, In 2 O 3 , SnO 2 , HfO 2 , TiO 2 , ZrO 2 [8][9][10][11] and GaN [12].…”

Section: Introductionmentioning

confidence: 99%

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Ferromagnetism in Mechanically Milled KNO3

Ota

Ōno

Uehara

et al. 2014

Trans. Mat. Res. Soc. Japan

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KNO 3 nano-particles with the diameter of about 28 nm were prepared by mechanical milling using planetary ball mill from the commercial KNO 3 powder. Rotation speeds of ball mill were 0 to 500 rpm, where the milling time was kept at 15 minutes. Magnetization was measured by SQUID magnetometer. The milled sample at 500 rpm showed same order of saturation magnetization as that of BaTiO 3 with vacancies.

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