Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Possible canted antiferromagnetism in UCu$_9$Sn$_4$   We report on the new compound UCu${}_9$Sn${}_4$ which crystallizes in the
tetragonal structure \emph{I}4/\emph{mcm} with lattice parameters $a =
8.600{\rm\AA}$ and $c = 12.359{\rm\AA}$. This compound is isotyp to the
ferromagnetic systems RECu${}_9$Sn${}_4$ (RE = Ce, Pr, Nd) with Curie
temperatures $T{}\rm_C$ = 5.5 K, 10.5 K and 15 K, respectively.
UCu${}_9$Sn${}_4$ exhibits an uncommon magnetic behavior resulting in three
different electronic phase transitions. Below 105 K the sample undergoes a
valence transition accompanied by an entropy change of 0.5 Rln2. At 32 K a
small hump in the specific heat and a flattening out in the susceptibility
curve probably indicate the onset of helical spin order. To lower temperatures
a second transition to antiferromagnetic ordering occurs which develops a small
ferromagnetic contribution on lowering the temperature further. These results
are strongly hinting for canted antiferromagnetism in UCu${}_9$Sn${}_4$.

26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph