Poole Ch.P., Jr. Handbook of Superconductivity

196

Chapter 6: Crystal Structures of Classical Superconductors

4. AB n

Types (n >_ 4)

CaB 6 type, D21, cP7, (221) Pm3m-fa

LaB 6, T c = 5.7 K, SX, R = 0.0115

a = 4.1571 A, Z = 1 (Korsukova et al., 1986; Matthias et al., 1968)

Atom WP x y z

La l(a) 0 0 0

B a

tqt" r

0.19948

1 1

aRefined occupancy 0.982(5), however, occurence of vacancies could not be established with certainty.

Compound a(A) T c (K) Ref.

YB 6 4.156 a 7.1 1, 2

LaB 6 4.1571 5.7 3*, 2

ThB 6 4.113 0.74 4, 2

aValue taken from figure.

References: 1, Dutchak et al. (1972); 2, Matthias et al. (1968); 3, Korsukova et aL (1986); 4, Cannon

and Famsworth (1983).

ThMn12 type, D2b, t/26, (139) I4/mmm-jifa

MoBe12, SX, T c = 295K, R = 0.012

a = 7.251, c = 4.234 A, Z = 2 (Collins and Mahar, 1984; Alekseevskii and Mikhailov, 1963)

Atom WP x y z

Mo 2(a) 0 0 0

1 0

Be(l) 8(j) 0.2895

Be(Z) 8(i) 0.3505 0 0

1 1 1

Be(3) 8(f) a a

Compound a a(A) c(A) T~ (K) Ref.

MOBel2 7.251 4.234 n.o. 1", 2

WBe12 7.362 4.216 4.1 b 3, 2

ReBel3 C . ..... 9.9 4

ReMgBel2 r . ..... 10.1 4

aT c

--

8.6 and 9.2 K reported for compositions OsBe 4 and OsBe 5 (unknown structure) (Alekseevskii

and Zakosarenko, 1973).

bNominal composition WBe13 , tetragonal, a = 10.14, c = 4.23 A (unknown structure).

~Nominal composition of sample.

References: 1, Collins and Mahar (1984); 2, Alekseevskii and Mikhailov (1963); 3, von Batchelder

and Raeuchle (1957); 4, Alekseevskii and Zakosarenko (1973).

J. Tabulated Data 197

UB12 type,

D2U,

cF52, (225)

Fm3rn-ia

ZrB12 , T c =

5.82 K, PN, R e -- 0.028

a = 7.388 A, Z = 4 (Kennard and Davis, 1983; Matthias

et al.,

1968)

Atom WP x y z

Zr 4(a) 0 0 0

1 0.1710 0.1710

B 48(i)

Compound a(A) T c(K) Ref.

ScBI2 7.402 a 0.39 1", 2

YB12 7.501 4.7 3, 2

LuB12 7.464 0.48 3, 2

ZrB12 7.388 b 5.82 4", 2

aTetragonal distortion (a = 5.22, c = 7.35 A) reported in Hamada

et al.

(1993).

bZrl_xScxB12

(0.1 < x < 0.9) transforms to a rhombohedral structure near room temperature, space

_

group

R3m,

a = 5.2278. c = 25.6752 A for x = 0.50 (not superconducting) (Hamada

et al.,

1993").

References: 1, Bruskov

et al.

(1988); 2, Matthias

et al.

(1968); 3, Paderno

et al.

(1971); 4, Kennard

and Davis (1983).

NaZnl3 type, D23,

cF112,

(226)

Fm3c-iba

UBe13, T c = 0.96 K a, SX, RT, R --- 0.022

a = 10.268 A, Z = 8 (McElfresh

et al.,

1990; Smith

et al.,

1985)

Atom WP x y

1 1 1

U 8(a) ~ ~

Be(l) 8(b) 0 0 0

Be(Z) 96(i) 0 0.1151 0.1765

aValue taken from figure.

Compound a(A)

7~(K)

Ref.

ThBe13 10.41727 a n.o.

UBel3 10.2550 0.96 b

U0.9692

Tho.o3o8 Be 13 10.2591 0.626

1"

2,1",3"

2

aAt 250 K.

bValue taken from figure.

References: 1, Goldman

et al.

(1985); 2, Smith

et al.

(1985); 3, McElfresh

et al.

(1990).

198 Chapter 6: Crystal Structures of Classical Superconductors

ZrZn22 type,

cF184,

(227)

Fd3m-gfdca

ReBe22, T c = 9.7 K, SX, R = 0.036

a = 11.561A, Z = 8 (Sands

et al.,

1962; Giorgi

et al.,

1982)

Atom WP

x y z a

I I 1

Re

Q[ ~

ota) g g

Be(l) 96(g) 0.0598 0.0598 0.3235

1 1

Be(2) 48(f) 0.4894 g g

1 1 1

Be(3) 16(d) ~ ~

Be(4) 16(c) 0 0 0

aOrigin at center (3m).

Compound a(A)

Tc(K ) Ref.

MoBe22 11.634 2.52 1, 2

WBe22 11.631 4.14 1, 2

TcBe22 11.566 5.7 2

ReBe22 11.560 9.7 2, 3*

References: 1, Kripyakevich and Gladyshevskii (1963); 2, Giorgi

et al.

(1982); 3, Sands

et aL

(1962).

5. AraB n

Types (m, n > 2)

Pu2C 3 type,

D5c,

ci40, (220)

I543d-dc

Lu2C3 a, T c = 15K, PX, R = 0.064

a = 8.0354 A, Z = 8, Fig. 6.20a, b (Novokshonov, 1980; Novokshonov

et al.,

1980)

Atom WP x y

Lu

16(c)

0.0499 0.0499

C 24(d) 0.2915 0

0.0499

1

_

4

aprepared at 3-9 GPa.

Compound a a(A)

Tc(K)

Ref.

Sc4C 3

7.2067 b < 1

SCl3Clo

8.531 c 8.5

Y2C3 a 8.2378 11.5

Y1.4 Tho.6 C3.1 e 8.362 17.0

Y1.8 Tio.2 C3.1 e 8.2382 14.5

Y1.sZro.2C2.9 e 8.2360 13.0

Y1.8 fro.2 C2.9 e

8.2384 12.4

Y1.8Mo0.2C2.9 e 8.239 13.8

Y1.8Wo.2C3.1 e 8.240 14.8

La2 C2.7o 8.8095

11.0

Lal. 6 Tho. 4

C3. 2

8.7717 14.3

Lu2 C f 8.0361 b 15 g

Th 2C2.9o

h 8.5520

4.1

1",2,3"

2

4, 5*

6

7, 8*, 9*

7

5", 8

7

(continued)

J. Tabulated Data 199

Thl.6Sc0.4C3 i 8.531 6.8 9

Thl.6Ho0.4C3 i 8.526 5.5 9

Thl.6Er0.4C3 i 8.523 8.2 9

Th 1.4Lu0.6 C 3 i 8.461 11.7 9

aData for

R2C 3

(R = Ce-Nd, Sm, Gd-Yb) reported in Spedding

et al.

(1958); Atoji and Williams

(1961"); Atoji and Tsunoda (1971"); Atoji (1978"); Novokshonov (1980"). Data for R2C 3 (R -- U-

Am) reported in Zachariasen (1952"); Austin (1959"); Mitchell and Lam (1970); Green

et al.

(1970").

bAt carbon-rich boundary.

CAdditional diffraction lines could not be indexed.

aPrepared at 1.5-2.5GPa; data for

Y2_xTxC3+y

(T--U, V, Nb, Ru, Au, Si, Ge, Sn, Pb, Bi;

T c < Tc(Y2C3) ) reported in Krupka

et al.

(1969b).

eprepared at 1.5-2.5 GPa.

fPrepared at 3-9 GPa.

gNo similar value reported elsewhere.

hprepared at 3.5GPa; data for

Th2_xRxC3+y

(R = Ce-Nd, Gd-Dy; T c < T c (Th2C2.90)) reported in

Krupka

et al.

(1973)

/Prepared at 3-4 GPa.

References: 1, Krikorian

et al.

(1969a); 2, Krikorian

et al.

(1969b); 3, Rassaerts

et al.

(1967); 4,

Krupka

et al.

(1969a); 5, Novokshonov (1980); 6, Krupka

et al.

(1969b); 7, Giorgi

et al.

(1970); 8,

Novokshonov

et al.

(1980): 9, Krupka

et al.

(1973).

Th3P 4 type, D73, c/28, (220)

I43d-ca

La3Se4, T c -= 7.80 K, SX

a - 9.055 A, Z - 4 (Holtzberg

et al.,

1965; Bucher

et al.,

1975)

Atom WP x y z

La 12(a) 3 0 1

8 4

Se 16(c) 0.075 0.075 0.075

Compound a(A) Tc(K ) Ref.

La3S4 a 8.730

8.06 1

La3 Se4 b 9.060 7.80 1, 2*

La3Te 4 9.630 5.30 1

aTransforms to a tetragonal structure at 90 K, a -- 8.648, c = 8.730 A at 4.2 K (Demier

et al.,

1975).

6Transforms to a tetragonal structure at 60 K, a = 8.971, c -- 9.055 A at 4.2 K (Dernier

et al.,

1975).

References: 1, Bucher

et al.

(1975); 2, Holtzberg

et al.

(1965).

CrsB 3 type, D8 t, ti32, (140)

I4/mcm-lhca

branch InsBi 3

InsBi3, T c = 4.2 K, SX, T = 293 K, R = 0.066

a = 8.544, c -- 12.680A, Z = 4 (Kubiak, 1977; Degtyareva

et al.,

1981)

Atom WP x y

In(1 ) 16(/) 0.1446 0.6446 0.1649

In(2) 4(c) 0 0 0

Bi(1) 8(h) 0.6559 0.1559 0

1

Bi(2) 4(a) 0 0

(continued)

200 Chapter 6:

Crystal

Structures

of Classical Superconductors

Compound a(A) c(A) T c (K) Ref.

1%.65 5bo.35 a 8.34

InsBi 3 8.544

12.34 5.6 1

12.68 4.2 b 1, 2*

aprepared at 5.5 GPa.

bT c

"--

6.4 K for Ino.6oBio.4o prepared at 5.0 GPa.

References: 1, Degtyareva

et al.

(1981); 2, Kubiak (1977).

Os4AI13 , mS34, (12)

C2/m-i8d

Os4Al13, T c = 5.5 K, SX, R = 0.103

a = 17.64, b = 4.228, c = 7.773 A, fl = 115.15 ~ Z = 2 (Edshammar, 1964; Muller

et al.,

1968)

Atom WP x y z

Os(1) 4(i) 0.0081 0 0.3053

Os(2) 4(i) 0.7060 0 0.2085

AI(1) 4(i) 0.086 0 0.068

Al(2) 4(i) 0.132 0 0.662

Al(3) 4(i) 0.210 0 0.413

Al(4) 4(/) 0.257 0 0.113

Al(5) 4(i) 0.413 0 0.132

Al(6) 4(i) 0.591 0 0.306

1 1

Al(7) 2(d) 0 ~

CulsSi 4 antitype, D86, c/76, (220)

I43d-eca

Th4D15, T c = 7.63 K a, PN, RT,

Rp

= 0.0368

a = 9.110 A, Z = 4 (Mueller

et al.,

1977; Dietrich

et al.,

1974).

Atom wP x

y z

Th 16(c) 0.2066 0.2066

D(1) 48(e) 0.0345 0.3794

D(2) 12(a) 3 0

8

0.2066

0.1548

1

_

4

aFor hydride; T c = 8.46 K at 2.8 GPa (values taken from figure).

TisRe24 type, Z phase,

ci58,

(217)

I43m- g2ca

substitution derivative of ~-Mn, A 12

TisRe24, T c = 6.6 K, PX

a = 9.609 A, Z = 2 (Trzebiatowski and Niemiec, 1955; Matthias

et al.,

1961)

Atom WP x

Ti(1) 8(c) 0.317 0.317 0.317

Ti(2) 2(a) 0 0 0

Re(l) 24(g) 0.089 0.089 0.278

Re(2) 24(g) 0.356 0.356 0.042

Compound a(A) Tc(K )

Ref.

Zro. 14Tco.86 9.636 9.7

Nbo.24Tco.76 9.592 12.9

1

2

(continued)

J. Tabulated Data 201

Sc5Re24 9.65 2.2 3, 4

TisRe24 9.587 6.6 5, 6*

Zro.14Reo.86 9.698 7.4 5

Hfo.14Reo.86 9.6801 5.86 7, 8

Nbo.18Reo.s2 9.641 9.7 5, 9*

Tao.zsReo.75 9.650 a 6.78 10, 8

Tao.19Nbo.loReo.71 ... 9.8 11

Moo.zsReo.75 9.593 9.26 12, 8

Wo.25Reo.75 9.594 9.00 13, 8

A15Re24 9.58 3.35 14, 15

Nbo.5oOso.5o 9.760 2.86 16

Nbo.6oPdo.4o 9.77 2.47 16

aValue taken from figure.

References: 1, Compton et al. (1961); 2, Giorgi and Szklarz (1970a); 3, Kripyakevich et al. (1963); 4,

Phillips (1989); 5, Matthias et al. (1961); 6, Trzebiatowski and Niemiec (1955); 7, Taylor et al. (1963);

8, Matthias et al. (1963); 9, Steadman and Nuttall (1964); 10, Brophy et al. (1960); 11, Tylkina et al.

(1973); 12, Knapton (1958/1959); 13, Kuz'ma et al. (1968); 14, Kripyakevich and Kuz'ma (1962);

15, Roberts (1976); 16, Bucher et al. (1961).

M%Se 8 type, Chevrel phase, hR42, (148) R3-f2c

Mo6Se8, T c = 6.5 K, SX, R = 0.045

a = 9.545, c = 11.210 A, Z -- 3 (Bars et aL, 1973a; Tarascon et aL, 1984b)

Atom WP x y

Mo 18(f) 0.17099 0.15205 0.10597

Se(1) 18(f) 0.03792 0.32762 0.08291

Se(2) 6(c) 0 0 0.28627

Compound a(A) c(A) T c (K)

Ref.

Mo6S 8 9.183 10.909

Mo2Re4S 8 9.338 10.424

Mo6S6Br2 9.545 10.357

Mo68612 9.639 10.437

Mo6Se 8 9.545 11.210

Mos.25Nb0.75 Se8 9.60 11.16

MOl.5 Re4. 5 Se 8 9.674 10.752

Mo 4 Ru 2 Se 8 9.680 10.850

Mo6SesC13 9.64 11.05

Mo6SevBr 9.65 a 11.01"

Mo6Se7I 9.80 a 10.88"

1.85

,..

13.8

14.0

6.5

6.2

...

5.7

7.1

7.6

Mo6Te 8 10.212 11.681 < 1.3

Mo5.25Nbo.75Te8 10.21 11.70 < 1.7

M%.zsTao.vsTe8 10.21 11.70 < 1.7

Mo4Re 2Te 8 10.225 11.508 3.55

1, 2*

3

4",5

5

6", 1

7

8*

7

5

9

7

3

(continued)

202

Chapter 6: Crystal Structures of Classical Superconductors

Mo5 RuTe 8 10.242 11.505 3.21 9

Mo4.66Rhl.33Te8 10.25 11.53 < 1.7 7

Mo6Te6C12 10.19 11.68 ... 7

Mo6Te5 Br3 10.20 11.66 ... 7

Mo6Te6I 2 10.31 a 11.35 a 2.6 5

aValue taken from figure.

References: 1, Tarascon et aL (1984b); 2, Chevrel et al. (1974); 3, Perrin et aL (1978); 4, Perrin et aL

(1979); 5, Sergent et al. (1977); 6, Bars et al. (1973a); 7, Perrin et al. (1980); 8, H6nle et al. (1983); 9,

Berry et al. (1988).

Mo6Ga31 type, mP148, (14) P21/c-e36ca

Mo6Ga30.75 a, T c -- 9.8 K, SX, R = 0.06

a -- 9.517, b = 16.067, c = 16.995 A,/~ = 95.09 ~ Z = 4 (Yvon, 1974; Matthias et aL, 1961)

Atom WP x y z Occ.

Mo(1) 4(e) 0.0622 0.3819 0.2381

Mo(2) 4(e) 0.1701 0.1489 0.0394

Mo(3) 4(e) 0.1848 0.6131 0.0403

Mo(4) 4(e) 0.3000 0.1109 0.3434

Mo(5) 4(e) 0.5753 0.3839 0.3591

Mo(6) 4(e) 0.6908 0.1585 0.1605

Ga(1 ) 4(e) 0.0180 0.7456 0.0122

Ga(2 ) 4(e) 0.0492 0.1218 0.3923

Ga(3) 4(e) 0.0707 0.8804 0.3983

Ga(4) 4(e) 0.0740 0.6328 0.4049

Ga(5) 4(e) 0.0894 0.3791 0.3927

Ga(6) 4(e) 0.1066 0.7566 0.2875

Ga(7) 4(e) 0.1093 0.0033 0.2909

Ga(8) 4(e) 0.1561 0.2416 0.2959

Ga(9) 4(e) 0.1563 0.5204 0.3035

Ga(10) 4(e) 0.1669 0.8845 0.1836

Ga(11) 4(e) 0.1778 0.2859 0.1337

Ga(12) 4(e) 0.2014 0.4729 0.1319

Ga(13) 4(e) 0.2046 0.1210 0.1914

Ga(14) 4(e) 0.2223 0.6351 0.1927

Ga(15) 4(e) 0.2683 0.0051 0.0800

Ga(16) 4(e) 0.2766 0.2008 0.4806

Ga(17) 4(e) 0.2812 0.7562 0.0913

Ga(18) 4(e) 0.3008 0.0028 0.4582

Ga(19) 4(e) 0.3420 0.3841 0.2600

Ga(20) 4(e) 0.3727 0.3844 0.4529

Ga(21) 4(e) 0.4314 0.1959 0.0981

Ga(22 ) 4(e) 0.4357 0.2488 0.3619

Ga(23) 4(e) 0.4359 0.3846 0.0978

Ga(24) 4(e) 0.4974 0.1309 0.2514

Ga(25) 4(e) 0.5408 0.0850 0.4265

Ga(26) 4(e) 0.5604 0.0203 0.1359

Ga(27) 4(e) 0.5956 0.4702 0.2187

Ga(28) 4(e) 0.5986 0.2955 0.2252

Ga(29) 4(e) 0.6541 0.1224 0.0110

0.9

(continued)

J. Tabulated Data 203

Ga(30) 4(e) 0.6729 0.2971 0.0659

1

Ga(31) 2(c) 0 0

Ga(32) 2(a) 0 0 0

0.9

aEarlier referred to as MoGa 4 or MoGa 5.

Pdl7Sel5

type, palladseite,

cP64,

(221)

Pm~3m-mjifeca

Rh17S15, T c -- 5.8 K, SX, R = 0.12

a = 9.911 A, Z = 2 (Geller, 1962; Raub

et al.,

1963)

Atom WP x y

Rh(1) 24(m) 0.1436 0.1436 0.3565

1 1

Rh(2) 6(f) 0.2612 ~

1 1

Rh(3) 3(c) 0 5

Rh(4) l(a) 0 0 0

1 0.2690 0.2690

S(1) 12(j)

S(2) 12(i) 0 0.3304 0.3304

S(3) 6(e) 0.2357 0 0

o~-MOlsSel9 type,

hP68,

(176)

P63/m-i4h2fe

filled-up derivative In3Mol5Sel9

In2.s7Mo15Se19, T c = 3.8 K, SX, R = 0.07

a = 9.804, r = 19.49 A, Z = 2 (Grfittner

et al.,

1979; Tarascon

et al.,

1985)

Atom WP x y z Occ.

1

In(l) 6(h) 0.0458 0.2127

1 2 0.1288

In(Z) 4(f) ~

Mo(1) 12(i) 0.1647 0.0142 0.0571

Mo(2) 12(i) 0.5035 0.3185 0.1334

1

Mo(3) 6(h) 0.5127 0.1692

Se(1 ) 12(i) 0.2858 0.3198 0.0509

Se(2) 12(i) 0.3794 0.0091 0.1393

1

Se(3) 6(h) 0.3543 0.3136

1 2

0.5297

Se(4) 4(f) ~

Se(5) 4(e) 0 0 0.1617

0.29

Compound a a(A) c(A) T c (K) Ref.

Mo15819 9.218 18.077 < 0.5 1

Mol5Sel9 9.462 19.61 4.3 2, 3*

Li3MOl5 Se19 9.724 19.47 3.5 2

Na3Mol5Sel9 9.712 19.68 < 0.5 2

K2 InMol5 Sel9 9.790 19.59 1.3 2

(continued)

204 Chapter 6: Crystal Structures of Classical Superconductors

In3MolsSel9 9.793 19.44 3.8 2, 4

T13.3Mo15Se19 9.853 19.41 < 0.5 2

Sn2.6Mo15 Se19 9.890 19.57 < 0.5 2

Pb2.3Mo15Se19 9.611 19.59 < 0.5 2

aData for AxMOlsS19 (A -- Na, K, Zn, Cd, In, T1, Sn; T c < 0.5 K) reported in Tarascon and Hull (1986).

References: 1, Tarascon and Hull (1986); 2, Tarascon

et al.

(1985); 3, Davis and Robinson (1990); 4,

Griittner

et al.

(1979).

13-MolsSe19 type, hR204, (167)

R3c-f4e2c 2

filled-up derivative In2MolsSel9

In2MolsSe19, T c = 1.5 K, SX, R = 0.055

a = 9.688, c -- 59.10 A, Z -- 6 (Potel

et al.,

1981, 1984)

Atom WP x y z

In 12(c) 0 0 0.11425

Mo(1 ) 36(f) 0.15307 0.16491 0.21066

Mo(2) 36(f) 0.16911 0.14921 0.01977

1

Mo(3) 18(e) 0.15973 0

Se(1 ) 36(f) 0.04005 0.32681 0.01663

Se(2) 36(f) 0.32380 0.02960 0.21427

1

Se(3) 18(e) 0.69019 0

Se(4) 12(c) 0 0 0.05457

Se(5) 12(c) 0 0 0.17609

Compound a(A) c(A) To (K) Ref.

MolsSe19 9.478 58.76 4.3 1, 2*

K2MolsS19 ...... 3.32 3

Li2MOl5 Sel9 9.637 58.16 2.6 1

Na2MOlsSel9 9.611 58.51 < 0.5 1

K2MolsSel9 9.727 58.17 2.1 1

Ba2MolsSel9 9.811 57.57 ... 4*

Ag 3 Mo15 Sel9 a 9.910 57.070 ... 3"

Cd2.sMOl5Sel9 9.970 56.70 < 0.5 1

In2MOlsSel9 9.687 58.15 1.4 1, 5*

Sn2MolsSe19 9.676 58.98 < 0.5 1

Pb2MolsSe19 9.683 57.78 < 0.5 1

aThe Ag atoms are displaced from the 3-fold axis to three partly occupied tetrahedral sites.

References: 1, Tarascon

et al.

(1985); 2, Gougeon

et al.

(1991); 3, Potel

et al.,

1984; 4, Gougeon

et al.

(1989); 5, Potel

et aL

(1981).

].

Tabulated Data

205

6. AmC60 Types

K3C60 type, f.c.c., cF252, (225)

Fm3m-12jca

filled-up derivative of

C60 ,

fullerene

K3C6o ,

T c

--

19.3 K, PX a, RT,

Rwp

= 0.08

a = 14.24 A, Z -- 4, Fig. 6.26 (Stephens

et al.,

1991)

Atom WP x y z

Occ.

1

K(1) 8(c)

K(2) 4(a) 0

C(1) 192(/) 0.051

C(2) 192(/) 0.084

C(3) 96(j) 0

1 1

4

0 0

0.316 0.160

O.096 0.287

0.046 0.255

0.5

aSynchrotron radiation.

Compound

Fullerides wtih

C60

molecules in (approximate) f.c.c, arrangement.

Space Group a(A) b(A) c(A) Tc(K ) Ref.

C60

Fro3

KC6o

Pmnn

RbC6o

Pmnn

Na2C6o

Pa3

Li2CsC60

Fm3m

Na3C6o

Fm~3m

NazKC60 f.c.c.

Na2RbC60

Pa3

NazCsC60

Fm3m

NazCs(NH3)4C60

Fm3

K3C6o

Fm3m

KzRbC6o s

KzCsC60 f.c.c.

K3 (NH3)C60

Fmmm

Rb3C60

Fm3m

Rb2KC60 f.c.c.

Rb2CsC60 f.c.c.

Cs2RbC60 f.c.c.

8ro.08C6o g

Fm3

Yb2.75C60

Pbca

Ca5C6o

Fm3m

Na6C60

Fm3m

14.161 a n.o. 1, 2

9.109 9.953 14.321 b n.o.

9.138 10.107 14.233 c n.o.

3 9

3*

14.189 < 2 4*

14.0746 n.oil

14.191 < 2 e

14.025 2.5

14.028 2.5

14.132 f 10.5

14.473 29.6

14.240 19.3

14.243 23

14.292 24

13.687 14.895 14.971 n.o.

14.384 29

14.323 27

14.431 31.30

14.555 33

14.144 n.o.

27.8733 27.9804 27.8743 6

14.01 8.4

14.380 < 2

5 9

4*

1

1,6

7,6

7*

1, 8*

1

9*

1, 10"

1

1,11

1

12"

13"

14"

4*

(continued)

Poole Ch.P., Jr. Handbook of Superconductivity

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