JP5725036B2 - ペロフスカイト型マンガン酸化物薄膜およびその製造方法 - Google Patents
ペロフスカイト型マンガン酸化物薄膜およびその製造方法 Download PDFInfo
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- 239000010409 thin film Substances 0.000 title claims description 113
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 title claims description 79
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 239000000758 substrate Substances 0.000 claims description 80
- 239000013078 crystal Substances 0.000 claims description 53
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 35
- 229910052760 oxygen Inorganic materials 0.000 claims description 32
- 239000001301 oxygen Substances 0.000 claims description 32
- 229910002367 SrTiO Inorganic materials 0.000 claims description 15
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 11
- 238000000608 laser ablation Methods 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- 230000002950 deficient Effects 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 5
- 238000011049 filling Methods 0.000 claims description 2
- 230000003252 repetitive effect Effects 0.000 claims 1
- 239000012071 phase Substances 0.000 description 51
- 230000007704 transition Effects 0.000 description 27
- 239000010408 film Substances 0.000 description 19
- 238000000034 method Methods 0.000 description 17
- 238000000137 annealing Methods 0.000 description 14
- 125000004429 atom Chemical group 0.000 description 14
- 230000008859 change Effects 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 8
- 230000005291 magnetic effect Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 125000004430 oxygen atom Chemical group O* 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 239000000523 sample Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 5
- 230000000875 corresponding effect Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- 238000010894 electron beam technology Methods 0.000 description 4
- 239000012212 insulator Substances 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 230000002596 correlated effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 230000001747 exhibiting effect Effects 0.000 description 3
- 230000014509 gene expression Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000002128 reflection high energy electron diffraction Methods 0.000 description 3
- 230000005290 antiferromagnetic effect Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005294 ferromagnetic effect Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 229910002710 Au-Pd Inorganic materials 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 238000005162 X-ray Laue diffraction Methods 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 229910001422 barium ion Inorganic materials 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 description 1
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 1
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 description 1
- KJZYNXUDTRRSPN-UHFFFAOYSA-N holmium atom Chemical compound [Ho] KJZYNXUDTRRSPN-UHFFFAOYSA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000005224 laser annealing Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- PPNAOCWZXJOHFK-UHFFFAOYSA-N manganese(2+);oxygen(2-) Chemical class [O-2].[Mn+2] PPNAOCWZXJOHFK-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- -1 rare earth cation Chemical class 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 238000004335 scaling law Methods 0.000 description 1
- 238000003746 solid phase reaction Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
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- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
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- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
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- C30B23/00—Single-crystal growth by condensing evaporated or sublimed materials
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- C30B23/06—Heating of the deposition chamber, the substrate or the materials to be evaporated
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Description
θ=arctan(1/m) 式1
により求められる。例えばm=1を式1に代入すれば上述した角度θが45度と算出され、同様に、m=2(n=1)に対して角度θが26.56度となることがわかる。このように、整数mが増加すると、(m10)配向を有している薄膜における(100)面が、薄膜表面あるいは基板面に対して平行となる向きに近づいていく。
本実施形態のペロフスカイト型マンガン酸化物薄膜として、m=2(n=1)の場合に相当する(210)配向の例を取り上げ、薄膜の表面平坦性、結晶構造、電荷整列相の転移温度(transition temperature for charge-ordered phase;Tco)について説明する。
d(210)=a・sinθ 式2
から求められる。θに26.56度、aに0.3905nmを代入すると、d(210)として0.1746nmが得られる。また、立方晶のユニットセルが(100)面方位から26.56度傾いたという見方をすると、面直方向の間隔は、3d(210)である0.5238nmとなる。図2(a)には、d(210)および3d(210)によって示されている間隔を例示している。さらに、面内原子位置における周期性まで考慮した面直方向の長さ周期は、5d(210)である0.873nmとなる。
次に、上述した本実施形態に従って作製した実施例を挙げて本発明をさらに具体的に説明する。以下の実施例に示す材料、使用量、割合、処理内容、処理手順等は本発明の趣旨を逸脱しない限り適宜変更することかできる。したがって、本発明の範囲は以下の具体例に限定されるものではない。本実施例においては、基板の処理と成膜処理について説明し、その後に実施例および比較例を対象にして行った測定結果について説明する。
2 ペロフスカイト型マンガン酸化物薄膜
Claims (6)
- 基板上に形成され、Baと希土類元素Lnとが、薄膜成長方向である面直方向に向かって秩序化されてAサイトを占めているペロフスカイト結晶格子を備えており、(m10)配向(m=2n;9≧n≧1)している
ペロフスカイト型マンガン酸化物薄膜。 - mが2であり、(210)配向しており、
薄膜成長方向である面直方向に向かってBaO−BO 2 −LnO−BO 2 −BaO−BO 2 −LnO−BO 2 ・・・の繰り返しの原子層を有している
請求項1に記載のペロフスカイト型マンガン酸化物薄膜。 - 前記希土類元素LnがSmであり、化学式SmBaMn2O6で表される
請求項1または請求項2に記載のペロフスカイト型マンガン酸化物薄膜。 - 前記基板が(210)面方位のペロフスカイト型単結晶である
請求項1または請求項2に記載のペロフスカイト型マンガン酸化物薄膜。 - 前記基板が(210)面を表面に有するSrTiO3基板である
請求項4に記載のペロフスカイト型マンガン酸化物薄膜。 - Baと希土類元素Lnとが秩序化されてAサイトを占めるペロフスカイト結晶格子を備えるペロフスカイト型マンガン酸化物薄膜の製造方法であって、
前記希土類元素と酸素とを含む面における酸素が欠損したピラミッド構造をとる原子層または薄膜をレーザーアブレーション法によって形成し、Baと希土類元素LnとによるAサイトの秩序化構造を薄膜成長方向である面直方向に向かって形成する第1工程と、
該第1工程において前記ピラミッド構造において酸素が欠損しているサイトに酸素を充填する第2工程と
を含み、
前記第1工程の処理が行われる雰囲気の酸素分圧を前記ピラミッド構造に酸素欠損を生じさせるために熱力学的に必要となる値に制御しながら、酸素以外のガスを含む前記雰囲気の全圧を秩序化された前記AサイトのBaと希土類元素Lnとの組成比が変動しない値に制御する
ペロフスカイト型マンガン酸化物薄膜の製造方法。
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WO2012157368A1 (ja) * | 2011-05-19 | 2012-11-22 | 富士電機株式会社 | 熱電変換構造体およびその製造方法 |
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JP2685721B2 (ja) | 1994-11-04 | 1997-12-03 | 工業技術院長 | 無粒界型マンガン酸化物系結晶体及びスイッチング型磁気抵抗素子 |
JP3030333B2 (ja) | 1997-03-14 | 2000-04-10 | 工業技術院長 | 電流及び電場誘起相転移を用いたスイッチング素子及びメモリー素子 |
JP3012902B2 (ja) | 1997-03-18 | 2000-02-28 | 工業技術院長 | 光誘起相転移を用いたスイッチング素子及びメモリー素子 |
JP4230374B2 (ja) * | 2004-01-28 | 2009-02-25 | シャープ株式会社 | ペロブスカイトマンガン酸化物薄膜及び該薄膜を備えてなるスイッチング素子、並びに該薄膜の製造方法 |
JP4963062B2 (ja) | 2006-12-26 | 2012-06-27 | 独立行政法人産業技術総合研究所 | Aサイト層状秩序化型ペロブスカイトMn酸化物薄膜の製造方法 |
KR20130139855A (ko) * | 2011-04-14 | 2013-12-23 | 후지 덴키 가부시키가이샤 | 페로브스카이트형 망간 산화물 박막 |
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2011
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- 2011-11-28 EP EP11847480.8A patent/EP2650408B1/en not_active Not-in-force
- 2011-11-28 WO PCT/JP2011/077356 patent/WO2012077518A1/ja active Application Filing
- 2011-11-28 KR KR1020137003502A patent/KR20130139854A/ko not_active Application Discontinuation
- 2011-11-28 JP JP2012547785A patent/JP5725036B2/ja not_active Expired - Fee Related
Non-Patent Citations (2)
Title |
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JPN6014030082; K.X.Jin et al.: 'Transport and photoinduced properties in La0.8SnMnO3 thin film' Journal of Alloys and Compounds Vol.470,no.1-2, 20090220, pp.552-556, ELSEVIER * |
JPN6014030084; Tomohiko Nakajima et al.: 'Epitaxial A Site Orderd Perovskite Manganite SmBaMn2O6 Film on SrTiO3(001):Fablication,Structure and' Chemistry of Materials Vol.19, 20070829, pp.5355-5362, ACS Publication * |
Also Published As
Publication number | Publication date |
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US8878322B2 (en) | 2014-11-04 |
EP2650408A1 (en) | 2013-10-16 |
EP2650408A4 (en) | 2014-09-03 |
KR20130139854A (ko) | 2013-12-23 |
EP2650408B1 (en) | 2015-10-14 |
WO2012077518A1 (ja) | 2012-06-14 |
JPWO2012077518A1 (ja) | 2014-05-19 |
US20130140661A1 (en) | 2013-06-06 |
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