Table 1 Fully relaxed structures for the 13 biocompatible models.

From: Fundamental electronic structure and multiatomic bonding in 13 biocompatible high-entropy alloys

Models

C

a (Å)

b (Å)

c (Å)

α

β

γ

Vol (Å3)

NN (Å)

SNN (Å)

M1

 TiNbTaV

4

16.104

16.066

16.084

90.049

89.522

90.288

4161.047

2.786

3.217

M2

 TiNbTaZr

4

16.793

16.755

16.845

90.002

89.902

90.400

4739.407

2.909

3.360

M3

 TiNbTaZrMo

5

16.600

16.509

16.560

89.566

90.138

90.134

4537.862

2.868

3.311

M4

 HfNbTaV

4

16.525

16.458

16.480

90.121

89.870

90.523

4481.912

2.856

3.298

M5

 NbTaTiVZr

5

16.546

16.432

16.459

89.881

89.864

90.136

4474.812

2.854

3.296

M6

 TiZrHfNbTa

5

16.874

17.115

16.987

89.696

90.083

90.161

4905.735

2.943

3.398

M7

 TiHfNbTa

4

16.734

16.749

16.767

89.974

89.902

90.457

4699.020

2.901

3.350

M8

 TiZrHfTa

4

17.197

17.168

17.027

90.103

89.471

89.909

5026.873

2.967

3.426

M9

 TiZrHfNb

4

17.153

17.124

17.066

90.196

89.515

90.087

5012.223

2.964

3.423

M10

 TiZrMoHfTa

5

16.806

16.757

16.836

89.752

90.128

90.199

4741.094

2.910

3.360

M11

 ZrNbMoHfTa

5

16.775

16.808

16.934

89.862

90.099

90.111

4774.622

2.917

3.368

M12

 TiZrNbMoHf

5

16.731

16.728

16.928

89.820

90.175

90.216

4737.708

2.909

3.359

M13

 TiNbMoHfTa

5

16.479

16.519

16.550

89.662

90.233

90.166

4504.892

2.861

3.303

  1. The NN and SNN stand for the average distances of nearest neighbors (NN), and second nearest neighbors (SNN), The elements involved are Ti, V, Zr, Nb, Mo, Hf, and Ta and ‘C’ stands for components. M1 (M8) has the smallest (largest) volume.