x (wt%)

Relative volume fraction

(%)

Lattice parameters

(Å)

Experimental density

Porosity

Gd-123

BaCuO₂

a

b

c

ρ (kg/m³)

P (%)

0.0

97.36

2.64

3.842

3.895

11.69

4881

29.97

(ZnFe₂O₄)_xGdBa₂Cu₃O_7−δ

0.01

97.68

2.32

3.842

3.895

11.697

4881

29.97

0.02

97.78

2.22

3.848

3.900

11.708

5041

27.41

0.04

97.82

2.18

3.845

3.896

11.705

5316

23.62

0.06

98.39

1.61

3.851

3.900

11.702

5370

22.68

0.1

96.30

3.70

3.842

3.892

11.696

5463

21.74

0.2

95.86

4.14

3.85

3.901

11.705

5425

21.91

0.4

95.64

4.36

3.847

3.866

11.706

5219

25.59

(CoFe₂O₄)_xGdBa₂Cu₃O_7−δ

0.01

98.33

1.67

3.848

3.897

11.700

5275

24.14

0.02

97.87

2.13

3.842

3.895

11.690

5299

24.03

0.04

97.67

2.33

3.844

3.895

11.700

5317

22.06

0.06

97.52

2.48

3.842

3.893

11.700

5464

21.64

0.1

96.00

4.00

3.848

3.895

11.700

5537

20.42

0.2

95.52

4.48

3.844

3.896

11.690

5592

19.76

0.4

95.21

4.86

3.847

3.904

11.690

5658

18.68