http://support.spring8.or.jp/Report_JSR/PDF_JSR_31A/2019A1795.pdf

2019A1795

BL14B2EXAFS ἲ࡟ࡼࡿ⇞ᩱ㟁ụࡢ㟁ゎ㉁࡜ࡋ࡚⏝࠸ࡿࣉࣟࢺࣥఏᑟࢭ࣑ࣛࢵࢡࢫࡢᒁᡤ⤖ᬗᵓ㐀ゎᯒ
Local Structural Analysis of Proton Conductive Ceramics
for Application as Electrolyte in Fuel Cells by EXAFS㡑 ᮾ㯌 a, b, ௢ ‫س‬໨ a, ᳜㔝 㞝኱ a, 㙠┠ 㑥ᙪ a, ⏿⏣ ┤⾜ a, ┿ᔱ ṇ฼ c, Ᏹ⏣ ဴஓ a
Donglin Hana, b, Ximu Chena, Katsuhiro Uenoa, Kunihiko Shizumea, Naoyuki Hatadaa,
Masatoshi Majimac, Tetsuya Udaaaி㒔኱Ꮫ኱Ꮫ㝔ᕤᏛ◊✲⛉ᮦᩱᕤᏛᑓᨷ, b ⸽ᕞ኱Ꮫ䠄୰ᅜ䠅ʀ࢚ࢿࣝࢠ࣮Ꮫ㝔cఫ཭㟁Ẽᕤᴗᰴᘧ఍♫aDepartment of Materials Science and Engineering, Kyoto University, Japanb
College of Energy, Soochow University, Chinac
Sumitomo Electric Industries, Ltd., JapanEXAFS ἲࢆ⏝࠸࡚ࠊỈ࿴཯ᛂࢆ㏻ࡌ࡚㟁Ⲵᢸయ࡛࠶ࡿࣉࣟࢺࣥࢆᑟධࡍࡿࡇ࡜࡛ࠊY ࢆࢻ࣮ࣉࡋࡓ BaZrO3 ࡢᒁᡤࡢᵓ㐀ኚ໬ࢆ ᐃࡋࡓࠋࡑࡢ⤖ᯝࠊỈ࿴ࡍࡿࡇ࡜࡟ࡼࡗ࡚ࠊY ࡜㞄᥋ࡍࡿ㓟໬≀࢖࢜ࣥ㸦YíO1㸧ࡢ㊥㞳ኚ໬ࡣ ZríO1 ࡼࡾ኱ࡁ࠸ࡇ࡜ࡀศ࠿ࡗࡓࠋࡑࢀࡣࠊࣉࣟࢺࣥࡣ Y ࡢ㏆ഐ࡟ඃඛⓗ㓄⨨ࡍࡿࡇ࡜ࡀ♧၀ࡉࢀࡿࠋࡉࡽ࡟ࠊỈ࿴ࡋࡓ BZY20 ࡟࠾࠸࡚ࠊY ࡜㞄᥋ࡍࡿ Zr / Yࡢ㊥㞳ࡣ YѸO1 ࡜ ZrѸO1 ࡢ㊥㞳ࡢ࿴ࡼࡾࡶ㛗࠸ࡓࡵࠊBZY20 ࡟ YѸOѸY ࡜࠸࠺㓄ิࡀᨭ㓄ⓗ࡟Ꮡᅾࡋ࡚࠸ࡿྍ⬟ᛶࡀ㧗࠸ࠋ࣮࣮࢟࣡ࢻ㸸 ࣉࣟࢺࣥఏᑟయࠊBaZrO3ࠊ࣌ࣟࣈࢫ࢝࢖ࢺᆺ⤖ᬗᵓ㐀ࠊEXAFS⫼ᬒ࡜◊✲┠ⓗ㸸Y ࢆࢻ࣮ࣉࡋࡓ BaZrO3㸦BZY㸧ࡣ 450°C ࡢຍ‵Ỉ⣲㞺ᅖẼ୰࡟࠾࠸࡚ࠊ0.01 S/cm ࡢ㧗࠸ࣉࣟࢺࣥఏᑟᗘࢆ♧ࡍ[1]୍᪉ࠊ஧㓟໬Ⅳ⣲ࡸỈ⵨Ẽ࡟ඃࢀࡓ໬ᏛᏳᐃᛶࢆ᭷ࡍࡿࡓࡵࠊࣉࣟࢺࣥఏᑟࢭ࣑ࣛࢵࢡᆺ⇞ᩱ㟁ụ㸦PCFC㸧ࡢ㟁ゎ㉁࡜ࡋ࡚ᮇᚅࡉࢀࡿࠋ≉࡟ࠊPCFC ࡢືస ᗘࡣ୰ ᇦ㸦400–700°C㸧࡛࠶ࡾࠊᏳ౯࡞ࢫࢸࣥࣞࢫࢆᵓ㐀ᮦᩱࠊ」ྜ㓟໬≀ࢆゐ፹࡜ࡋ࡚ᛂ⏝࡛ࡁࡿࡓࡵࠊ⇞ᩱ㟁ụࡢస〇ࢥࢫࢺࢆపୗࡍࡿࡇ࡜ࡀ࡛ࡁࡿࠋࡋࡓࡀࡗ࡚ࠊPCFC ࡣḟୡ௦ࡢ࢚ࢿࣝࢠ࣮౪⤥⿦⨨࡜ࡋ࡚኱ࡁࡃὀ┠ࡉࢀ࡚࠸ࡿࠋPCFC ࡢ㟁ゎ㉁࡜ࡋ࡚ᛂ⏝ࡍࡿࡓࡵ࡟ࠊBZY ࡢࣉࣟࢺࣥఏᑟᗘࠊ㍺⋡࡞࡝ࡢᛶ⬟ࢆࡉࡽ࡟ྥୖࡍࡿࡇ࡜ࡣ㔜せ࡞ㄢ㢟࡛࠶ࡿࠋ୍᪉ࠊBZY ୰࡟ᑟධࡉࢀࡓࣉࣟࢺࣥࡣࠊ⤖ᬗᵓ㐀୰ࡢ㓟໬≀࢖࢜ࣥࡢ㏆ഐ࡟㓄⨨ࡋࠊ㓟໬≀࢖࢜ࣥ㛫࡟࣍ࢵࣆࣥࢢࡍࡿࡇ࡜࡟ࡼࡗ࡚ࠊࣉࣟࢺࣥఏᑟࡀⓎ⌧ࡍࡿࠋࡋࡓࡀࡗ࡚ࠊࣉࣟࢺࣥఏᑟࡢ࣓࢝ࢽࢬ࣒ࡢ⌮ゎࠊཬࡧࣉࣟࢺࣥఏᑟ≉ᛶࡢྥୖ࡟ࡣࠊヲ⣽࡞⤖ᬗᵓ㐀ࢆゎ᫂ࡍࡿࡇ࡜ࡀ㠀ᖖ࡟㔜せ࡛࠶ࡿࠋࡇࢀࡲ࡛ࠊX ⥺ࡸ୰ᛶᏊᅇᢡ࡞࡝ࡢᐇ㦂ᡭἲࢆ⏝࠸࡚ BZY ࡢ long-range ࡢ⤖ᬗᵓ㐀ࢆሗ࿌ࡋࡓ◊✲ࡀࡓࡃࡉࢇ࠶ࡿࠋ୍᪉ࠊࣉࣟࢺࣥࡣ BZY ୰࡟⛣ືࡍࡿሙྜࠊ㞄᥋ࡍࡿ㓟໬≀࢖࢜ࣥཬࡧ㝧࢖࢜ࣥ࠿ࡽ኱ࡁ࡞ᙳ㡪ࡶཷࡅ࡚࠸ࡿࠋࡍ࡞ࢃࡕࠊ㞄᥋ࡍࡿ࢖࢜ࣥ✀ࡸ⤖ᬗᵓ㐀ࡢࢧ࢖ࢺ࡟ࡼࡗ࡚ࠊ㓟໬≀࡟ࣉࣟࢺࣥࡢᏳᐃᛶࡸ⛣ືᗘ࡞࡝ࡀኚ໬ࡍࡿࠋࡼࡗ࡚ࠊBZY ୰ࡢࣉࣟࢺࣥࡢᣲືࢆゎ᫂ࡍࡿࡓࡵ࡟ࠊ࢖࢜ࣥ✀ࡸࢧ࢖ࢺูࡢᒁᡤࡢᵓ㐀᝟ሗࢆᢕᥱࡍࡿࡇ࡜ࡀ㔜せ࡛࠶ࡿࠋࡑࡇ࡛ࠊᮏ◊✲࡛ࡣࠊEXAFS ἲࢆ⏝࠸࡚ࠊBZY ࡢᵓᡂඖ⣲࡛࠶ࡿ Ba, Zr, Y ࡢ࿘ᅖࡢᒁᡤ⤖ᬗᵓ㐀ࢆゎᯒࡍࡿࠋ
ࡲࡓࠊBZY ࡼࡾඃࢀࡓ᪂つ࡞㟁ゎ㉁ೃ⿵ࡢ᥈⣴ࡣࠊᙜ◊✲ศ㔝ࡢࡶ࠺୍ࡘࡢ㔜せ࡞ㄢ㢟࡛࠶ࡿࠋࡋ࠿ࡋࠊ㐺ษ࡞㛤Ⓨᣦ㔪ࡀᮍࡔ☜❧ࡉࢀ࡚࠸࡞࠸ࠋࡑࡇ࡛ࠊ➨୍Ṍ࡜ࡋ࡚ࠊᮏ◊✲࡛ࡣࠊBZY ࡢ❧᪉ᬗ࣌ࣟࣈࢫ࢝࢖ࢺ࡜࠸࠺ࢩࣥࣉࣝ࡞⤖ᬗᵓ㐀࡟╔┠ࡋࠊࣉࣟࢺࣥࡢᑟධ᭷↓࡟ࡼࡗ࡚ࠊᑐ㇟ඖ⣲ࡢ㓄఩ᅪࡢࣃ࣓࣮ࣛࢱ࣮ࡢኚ໬࠿ࡽࠊ᪂ࡋ࠸ࣉࣟࢺࣥఏᑟᆺ㟁ゎ㉁ࡢⓎぢࡲ࡛ᑟࡃ㛤Ⓨᣦ㔪ࡢ᳨ウࢆ⾜ࡗ࡚ࡳࡓ࠸ࠋ䠉㻝㻞㻜䠉ᐇ㦂㸸ᮏ◊✲࡟ࠊ୕✀㢮ࡢ⤌ᡂࢆᣢࡘヨᩱࢆ౑ࡗࡓ㸸BaZr0.9Y0.1O3íį㸦BZY10㸧, BaZr0.85Y0.15O3íį
㸦BZY15㸧ཬࡧ BaZr0.8Y0.2O3íį㸦BZY20㸧ࠋヨᩱࡢྜᡂ᪉ἲࡣᅛ┦཯ᛂἲ࡛࠶ࡗࡓࠋྜᡂࡋࡓᚋࠊ
1600°C ࡢ㓟⣲㞺ᅖẼୗ࡛ 24 ᫬㛫ࡢ⇕ฎ⌮࡟ࡼࡾ↝⤖ࡉࢀࡓࠋࡑࡢᚋࠊ୍㒊ࡢヨᩱࢆ 300°C ࡢ Ar– 5% H2O 㞺ᅖẼୗ࡛Ỉ࿴ࡉࡏࡿࡇ࡜࡛ࣉࣟࢺࣥࡢᑟධࢆ⾜ࡗࡓࠋࡲࡓࠊ୍㒊ࡢヨᩱࢆ 1000°C ࡢ஝⇱ Ar 㞺ᅖẼୗಖᣢࡍࡿࡇ࡜࡛⬺Ỉࡉࡏࡓࠋࡇࢀ࡟ࡼࡾᚓࡽࢀࡓヨᩱࢆ⢊ᮎࡲ࡛⢊○ࡋ࡚ࠊ❅໬࣍࢘⣲ࢆ⏝࠸࡚ᕼ㔘ࡋࡓᚋࠊ෇┙≧ࡢヨᩱ࡟୍㍈ᡂᙧࡋࡓࠋ
EXAFS ᐇ㦂ࡣࠊSPring-8 ࡢ BL14B2 ࣅ࣮࣒ࣛ࢖ࣥࢆ฼⏝ࡋ࡚ᐇ᪋ࡉࢀࡓࠋヨᩱࢆ࣍ࣝࢲ࣮࡟⿦╔ࡋࡓᚋࠊࢡࣛ࢖࢜ࢫࢱࢵࢺࢆ⏝࠸࡚ 10 K ⛬ᗘࡲ࡛෭༷ࡋࡓࠋࡑࡢᚋࠊSi㸦311㸧ࡢศග⤖ᬗࢆ฼⏝ࡋ࡚ࠊBa-K, Zr-K, Y-K ➃ࡢ EXAFS ࢫ࣌ࢡࢺࣝࢆ᥇㞟ࡋࡓࠋࢹ࣮ࢱゎᯒࡣ Artemis ࢯࣇࢺࢆ⏝࠸࡚⾜ࢃࢀࡓࠋ⤖ᯝ࠾ࡼࡧ⪃ᐹ㸸
Ba-K, Zr-K, ཬࡧ Y-K ➃ࡢ EXAFS ࢫ࣌ࢡࢺࣝࡢゎᯒ࡟ࡼࡾồࡵࡽࢀࡓྛ㓄఩ᅪࡢ㊥㞳㸦R㸧ࠊ㓄఩ᩘ㸦N㸧ࠊཬࡧ Debye-Waller ᅉᏊ㸦ı2㸧ࢆࡒࢀࡒࢀ⾲ 1ࠊ2ࠊ3 ࡟ࡲ࡜ࡵࡿࠋ౛࡜ࡋ࡚ࠊỈ࿴ࡋࡓ
BZY20 ࡢࢫ࣌ࢡࢺࣝࡢゎᯒ⤖ᯝࢆᅗ 1 ࡟♧ࡍࠋࣇ࢕ࢵࢸ࢕ࣥࢢࡍࡿ㝿࡟ࠊY ࠿ࡽ➨୍㞄᥋ࡍࡿ㓟໬≀࢖࢜ࣥࢧ࢖ࢺ㸦YíO1㸧ࠊ➨஧㞄᥋ࡍࡿ Ba ࢧ࢖ࢺ㸦YíBa㸧ࠊ➨୕㞄᥋ࡍࡿ Zr / Y ࢧ࢖ࢺ㸦YíZr/ Y㸧ࠊཬࡧ➨ᅄ㞄᥋ࡍࡿ㓟໬≀࢖࢜ࣥࢧ࢖ࢺ㸦YíO2㸧࡜࠸࠺ᅄࡘࡢ㓄఩ᅪࢆ⪃៖ࡋࡓࠋᅗ 1 ࡟♧ࡍࡼ࠺࡟ࠊ࣓࢖ࣥࣆ࣮ࢡࡣࡑࡢᅄࡘࡢ㓄఩ᅪ࡟ࡑࢀࡒࢀᑐᛂࡍࡿࡇ࡜ࡀศ࠿ࡗࡓࠋ
න 1ɿBa-. ୼ EXAFS ηϘέφϩ͹մੵ݃Վ
BZY10

BZY15

BZY20

Dehydrated

Hydrated

Dehydrated

Hydrated

Dehydrated

Hydrated

2.94982.95532.95092.95642.97302.979313.25㻔146㻕

13.63㻔150㻕

13.33㻔147㻕

14.06㻔155㻕

12.90㻔142㻕

14.00㻔154㻕

ı /Å0.0109

0.01130.01300.01450.01640.0097

2nd shell

5/Å

3.63203.63333.63563.64103.6441

3.6372

BaíZr / Y2

ı /Å

0.00370.00360.00410.00400.00490.0031

3rd shell

5/Å

4.1757

4.18754.18184.19974.20434.1869YíZr / Y2

ı /Å

0.00640.00570.00680.00580.00740.0051

4th shell

5/Å

5.27205.26615.2931

5.33735.26115.3064

YíO2

2

0.01420.01180.01330.01680.02440.0218

1st shell

5/Å

BaíO1

1
2

2

2

2

2

ı /Å
䠉㻝㻞㻝䠉
න 2ɿZr-. ୼ EXAFS ηϘέφϩ͹մੵ݃Վ
BZY10

BZY15

BZY20

Dehydrated

Hydrated

Dehydrated

Hydrated

Dehydrated

Hydrated

1st shell

5/Å2.1195

2.12312.12142.12592.12612.1271

ZríO1

1

6.34䠄70䠅

6.41䠄71䠅

6.25䠄69䠅

6.34䠄70䠅

6.43䠄70䠅

6.44䠄71䠅

ı2 / Å2

0.00330.00350.00320.00360.00390.0043

2 shell5/Å3.65033.65373.63623.64103.64673.6517

ZríBa

ı2 / Å2

0.00260.00260.00340.00360.00450.00493 shell

5/Å

4.62774.6007

4.2146

4.21194.1986

4.1943

ZríZr / Y

ı2 / Å2

0.03010.03080.02030.01930.01750.0165

4 shell

5/Å4.55044.54804.8451

4.83384.80034.7822ZríO2

ı2 / Å2

0.00990.01000.02790.02730.02560.0247

ndrdthන 3ɿY-. ୼ EXAFS ηϘέφϩ͹մੵ݃Վ
BZY10

BZY15

BZY20

Dehydrated

Hydrated

Dehydrated

Hydrated

Dehydrated

Hydrated

1st shell

5/Å

2.21922.22082.22102.23972.23442.2421

YíO1

1

6.17䠄68䠅

6.55䠄72䠅

6.66䠄73䠅

7.19䠄79䠅

6.09䠄67䠅

7.01䠄77䠅

ı2 / Å2

0.00680.00560.00710.00740.00760.0070

2nd shell

5/Å

3.66293.64193.67143.65993.67173.6552

YíBa

2

ı /Å

0.00740.00430.00840.00720.00900.0074

3rd shell

5/Å

4.24564.28514.24674.27004.26404.3980

YíZr / Y2

ı /Å

0.00130.00210.00140.00200.00120.0048

4th shell

5/Å

4.65954.69284.65854.68284.68344.7081

YíO2

2

0.00460.00550.00450.00430.00420.0042

222ı /Å⾲ 3 ࡟♧ࡍࡼ࠺࡟ࠊ⬺Ỉࡋࡓ BZY20 ࡢ YíO1 ࡢ㊥㞳ࡣ 2.2344 Å ࡛࠶ࡾࠊỈ࿴ࡋࡓ BZY ࡢ YíO1㊥㞳ࡣ 2.2421 Å ࡛࠶ࡗࡓࠋࡋࡓࡀࡗ࡚ࠊỈ࿴ࡍࡿࡇ࡜࡟ࡼࡗ࡚ࠊYíO1 ࡢ㊥㞳ࡣ 0.0077 Å 㛗ࡃ࡞ࡗࡓࠋࡲࡓࠊỈ࿴ࡍࡿࡇ࡜࡟ࡼࡗ࡚ࠊBZY15 ࡢ YíO1 ㊥㞳ࡣ 0.0187 Å 㛗ࡃ࡞ࡗࡓࠋ୍᪉ࠊỈ࿴ࡋ
ࡓᚋࠊBZY15 ཬࡧ BZY20 ࡢ ZríO1 ㊥㞳ࡣࡑࢀࡒࢀ 0.0045 ཬࡧ 0.0010 Å ࡛࠶ࡾࠊYíO1 ࡢ㊥㞳ኚ໬ࡼࡾᑠࡉ࠸ࡇ࡜ࡀศ࠿ࡗࡓࠋࡑࢀࡣࠊᑟධࡋࡓࣉࣟࢺࣥࡣ Y ࡟㞄᥋ࡍࡿ㓟໬≀࢖࢜ࣥ࡟㓄⨨ࡋࡸࡍ࠸ࠊࡍ࡞ࢃࡕࠊY ࡟ࡼࡾࢺࣛࢵࣉࡉࢀࡸࡍ࠸ࡇ࡜ࡀ♧၀ࡉࢀࡿࠋ୍᪉ࠊỈ࿴ࡍࡿࡇ࡜࡟ࡼࡗ
࡚ࠊBZY15 ࡜ BZY20 ࡢ BaíO1 ࡢ㊥㞳ࡣࡑࢀࡒࢀ 0.0055 ཬࡧ 0.0063 Å 㛗ࡃ࡞ࡗࡓࠋࡲࡓࠊBa, Y,Zr ࡢ➨୍㞄᥋ࡍࡿ㓟໬≀࢖࢜ࣥࡢ㓄఩ᩘࢆホ౯ࡋࡓ⤖ᯝࠊỈ࿴ࡍࡿࡇ࡜࡟ࡼࡗ࡚ࠊ㓄఩ᩘࡀ㧗ࡃ࡞ࡗࡓഴྥࡀ࠶ࡿࡇ࡜ࡀ☜ㄆ࡛ࡁࡓࠋࡑࢀࡣࠊỈ࿴ࡍࡿ࡜ࠊ୍㒊ࡢ㓟⣲✵Ꮝࡀ㓟໬≀࢖࢜ࣥ࡟ࡼࡾᇙࡵࡽࢀࡓࡇ࡜ࡀཎᅉ࡛࠶ࡿ࡜⪃࠼ࡽࢀࡿࠋ䠉㻝㻞㻞䠉ᅗ 1㸬 䠄a㸧Ỉ࿴ࡋࡓ BZY20 ࡢࣇ࣮࢙ࣜኚ᥮ࢫ࣌ࢡࢺࣝ㸦㉥୸㸧ࠊࣇ࢕ࢵࢸ࢕ࣥࢢࡋࡓ⤖ᯝ㸦㟷࠸ᐇ⥺㸧ࠊ୧⪅ࡢᕪ㸦㯮࠸Ⅼ⥺㸧ࠊཬࡧ Y ࠿ࡽ㸦b㸧➨୍㞄᥋ࡍࡿ㓟໬≀࢖࢜㸦YíO1㸧ࠊ㸦b㸧➨஧㞄᥋ࡍࡿ Ba㸦YíBa㸧ࠊ㸦c㸧➨୕㞄᥋ࡍࡿ Zr / Y㸦YíZr / Y㸧ࠊཬࡧ㸦d㸧➨ᅄ㞄᥋ࡍࡿ㓟໬≀࢖࢜ࣥ㸦YíO2㸧ࡢ㓄఩ᅪࡢࡑࢀࡒࢀࡢࣇ࢕ࢵࢸ࢕ࣥࢢ⤖ᯝࠋࡉࡽ࡟ࠊỈ࿴ࡍࡿࡇ࡜࡟ࡼࡗ࡚ࠊZríZr / Y ࡜ YíZr / Y ࡣ␗࡞ࡿᣲືࢆ♧ࡋ࡚࠸ࡿࡇ࡜ࡀ☜ㄆࡉࢀࡓࠋ⾲ 2 ࠿ࡽศ࠿ࡿࡼ࠺࡟ࠊỈ࿴ࡍࡿ࡜ࠊZríO1 ㊥㞳ࡀ㛗ࡃ࡞ࡗࡓࡇ࡜࡟ࡶ㛵ࢃࡽࡎࠊZríZr /Y ࡢ㊥㞳ࡀ▷ࡃ࡞ࡗࡓࠋࡑࢀࡣࠊO1íZríO1 ࡢゅᗘࡀᑠࡉࡃ࡞ࡗࡓࡇ࡜ࡀ♧၀ࡉࢀࡿࠋ୍᪉ࠊ⾲ 3࡟♧ࡍࡼ࠺࡟ࠊỈ࿴ࡍࡿ࡜ࠊYíO1 ࡜ YíZr /Y ࡢ㊥㞳ࡣ࡜ࡶ࡟㛗ࡃ࡞ࡗࡓࠋ≉࡟ࠊ⬺Ỉࡋࡓ BZY20
ࡢ YíZr / Y ࡢ㊥㞳ࡣ 4.2640 Å ࡛࠶ࡿࡀࠊỈ࿴ࡋࡓᚋࠊ4.3980 Å ࡟࡞ࡗࡓࠋỈ࿴ࡋࡓ BZY20 ࡢ Zr
íO1 ࡜ YíO1 ࡢ㊥㞳ࡣࡑࢀࡒࢀ 2.1271 ཬࡧ 2.2390 Å ࡛࠶ࡿࡇ࡜ࢆ㚷ࡳ࡚ࠊࡶࡋ YíO1íZr ࡜࠸࠺㓄ิࡀᨭ㓄ⓗ࡟ᏑᅾࡍࢀࡤࠊYíZr / Y ࡢ㊥㞳ࡣ㛗ࡃ࡚ࡶ 4.3661 Å ࡛࠶ࡾࠊ4.3980 Å ࡼࡾ▷࠸ࠋࡋࡓࡀࡗ࡚ࠊBZY20 ࡟࠾࠸࡚ࠊYíO1íY ࡜࠸࠺㓄ิࡣᨭ㓄ⓗᏑᅾࡍࡿྍ⬟ᛶࡀ㧗࠸࡜⪃࠼ࡽࢀࡿࠋ
BZY10 ཬࡧ BZY15 ࡢ YíZr / Y ࡢ㊥㞳ࡶỈ࿴࡟కࡗ࡚㛗ࡃ࡞ࡗࡓࡀࠊBZY20 ࡟㉳ࡇࡗࡓ YíZr / Yࡢ㊥㞳ኚ໬࡯࡝㢧ⴭ࡛ࡣ࡞࠿ࡗࡓࠋヲ⣽࡞ཎᅉࡀࡲࡔ୙࡛᫂࠶ࡿࡀࠊࡇࢀ࠿ࡽゎ᫂ࡋ࡚࠸ࡁࡓ࠸࡜⪃࠼ࡿࠋཧ⪃ᩥ⊩㸸
[1] D. Han, T. Uda, -0DWHU&KHP A 6㸦2018㸧18571.

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