Exchange-striction associated with the elliptical proper helical magnetic structure in the ferroelectric phase of CuFe $_{1-y}$ Ga $_{y}$ O $_{2}$

CuFe $_{1-y}$ Ga $_{y}$ O $_{2}$ の強誘電相における楕円螺旋磁気構造による磁歪

寺田典樹*; 中島多朗*; 満田節生*; 松田雅昌; 加倉井和久; 田中義人*; 北澤英明*

Terada, Noriki*; Nakajima, Taro*; Mitsuda, Setsuo*; Matsuda, Masaaki; Kakurai, Kazuhisa; Tanaka, Yoshihito*; Kitazawa, Hideaki*

Detailed magnetic structure in the ferroelectric phase of CuFe $_{1-y}$ Ga $_{y}$ O $_{2}$ has been recently determined to be proper helical structure with the ellipcity of 0.9 by the comprehensive neutron diffraction study. In the present study, we have investigated the lattice modulation associated with the elliptical magnetic structure, using resonant X-ray diffraction measurements on CuFe $_{0.965}$ Ga $_{0.035}$ O $_{2}$ . We observed the superlattice reflection indexed as (0, 1+2 $_{rm m}$ , 0), where $_{rm m}$ is the wave number of the magnetic modulation. The energy spectrum near the Fe- absorption edge for the superlattice peak intensity conforms with that for the fundamental (0, 2, 0) intensity, suggesting that the superlattice modulation is at least associated with the displacements of the Fe ions, The origin of the superlattice modulation is discussed within the exchange-striction model.

使用言語	:	English
掲載資料名	:	Journal of Physics; Conference Series
巻	:	211
号	:	1
ページ数	:	p.012005_1 - 012005_6
発行年月	:	2010/01
発表会議名	:	Polarized Neutrons and Synchrotron X-rays for Magnetism 2009 (PNSXM 2009)
開催年月	:	2009/08
開催都市	:	Bonn
開催国	:	Germany
キーワード	:	no keyword

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論文URL	:	https://doi.org/10.1088/1742-6596/211/1/012005
研究データの公開先DOI	:
使用施設	:	JRR-3M(研究炉3)
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論文解説記事 (成果普及情報誌)	:
受委託・共同研究相手機関	:	理化学研究所; 東京理科大学; 物質・材料研究機構

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InCites™	:	パーセンタイル：66.93 分野：Physics, Applied
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論文投稿番号 : 12123

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Exchange-striction associated with the elliptical proper helical magnetic structure in the ferroelectric phase of CuFeGaO

CuFeGaOの強誘電相における楕円螺旋磁気構造による磁歪

Exchange-striction associated with the elliptical proper helical magnetic structure in the ferroelectric phase of CuFe $_{1-y}$ Ga $_{y}$ O $_{2}$

CuFe $_{1-y}$ Ga $_{y}$ O $_{2}$ の強誘電相における楕円螺旋磁気構造による磁歪